Slow Spin Relaxation of Optically Polarized Sodium Atoms
In order to obtain as narrow as possible paramagnetic resonance signals, it is of importance to investigate the conditions under which long relaxation times can be realized. In the present experiment on sodium atoms diffusing in argon gas, relaxation due to sodium-sodium collisions was minimized by...
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1957 |
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Online-Ressource 3 |
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APS Digital Backfile Archive 1893-2003 |
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Enthalten in: The physical review - Lancaster, Pa. [u.a.], 1893, 105(1957), 5, Seite 1487-1489 |
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volume:105 ; year:1957 ; number:5 ; pages:1487-1489 ; extent:3 |
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| 520 | |a In order to obtain as narrow as possible paramagnetic resonance signals, it is of importance to investigate the conditions under which long relaxation times can be realized. In the present experiment on sodium atoms diffusing in argon gas, relaxation due to sodium-sodium collisions was minimized by employing very low sodium partial vapor pressures (about 10-7 mm Hg). While at lower pressures the argon is serving its function well to slow down relaxation by inhibiting wall diffusion, at about 10 cm Hg relaxation due to sodium-argon collisions becomes the decisive factor. Nevertheless it was possible to realize a relaxation time of 0.21 sec for a 1-liter spherical bulb filled with 3 cm argon. About 0.02 sec was found for a 0.1-liter, 40 cm argon sample. In carrying out the experiments, optical pumping by circularly polarized resonance radiation was used to create an orientation of the sodium atoms which then was monitored by measuring the transmission of the pumping radiation through the sample. By suddenly reversing a small axial magnetic field, the polarization of the atoms could be made to reverse too. From the decay rates of this inverted polarization under the combined effects of relaxation and continuing optical pumping, the experimental relaxation times were deduced. The strong signals obtained are indicative of available signal to noise ratios in future radio-frequency resonance reorientation experiments using the transmission monitoring technique. A theoretical analysis of the optical pumping process, including the dynamic aspects and allowing for collisions with argon that the sodium atoms undergo while in the excited state, was carried out and used to describe the experimental data. | ||
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(DE-627)NLEJ251728358 (DE-601)aps:ef9d61e8cca26f134596752f923eaa3ea213adf1 DE-627 ger DE-627 rakwb Slow Spin Relaxation of Optically Polarized Sodium Atoms 1957 Online-Ressource 3 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In order to obtain as narrow as possible paramagnetic resonance signals, it is of importance to investigate the conditions under which long relaxation times can be realized. In the present experiment on sodium atoms diffusing in argon gas, relaxation due to sodium-sodium collisions was minimized by employing very low sodium partial vapor pressures (about 10-7 mm Hg). While at lower pressures the argon is serving its function well to slow down relaxation by inhibiting wall diffusion, at about 10 cm Hg relaxation due to sodium-argon collisions becomes the decisive factor. Nevertheless it was possible to realize a relaxation time of 0.21 sec for a 1-liter spherical bulb filled with 3 cm argon. About 0.02 sec was found for a 0.1-liter, 40 cm argon sample. In carrying out the experiments, optical pumping by circularly polarized resonance radiation was used to create an orientation of the sodium atoms which then was monitored by measuring the transmission of the pumping radiation through the sample. By suddenly reversing a small axial magnetic field, the polarization of the atoms could be made to reverse too. From the decay rates of this inverted polarization under the combined effects of relaxation and continuing optical pumping, the experimental relaxation times were deduced. The strong signals obtained are indicative of available signal to noise ratios in future radio-frequency resonance reorientation experiments using the transmission monitoring technique. A theoretical analysis of the optical pumping process, including the dynamic aspects and allowing for collisions with argon that the sodium atoms undergo while in the excited state, was carried out and used to describe the experimental data. APS Digital Backfile Archive 1893-2003 Dehmelt, H. G. oth Enthalten in The physical review Lancaster, Pa. [u.a.], 1893 105(1957), 5, Seite 1487-1489 (DE-627)NLEJ24823790X (DE-600)2177092-X 1536-6065 nnns volume:105 year:1957 number:5 pages:1487-1489 extent:3 https://www.tib.eu/de/suchen/id/aps%3Aef9d61e8cca26f134596752f923eaa3ea213adf1 Verlag Deutschlandweit zugänglich GBV_USEFLAG_U ZDB-1-APS GBV_NL_ARTICLE AR 105 1957 5 1487-1489 3 |
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(DE-627)NLEJ251728358 (DE-601)aps:ef9d61e8cca26f134596752f923eaa3ea213adf1 DE-627 ger DE-627 rakwb Slow Spin Relaxation of Optically Polarized Sodium Atoms 1957 Online-Ressource 3 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In order to obtain as narrow as possible paramagnetic resonance signals, it is of importance to investigate the conditions under which long relaxation times can be realized. In the present experiment on sodium atoms diffusing in argon gas, relaxation due to sodium-sodium collisions was minimized by employing very low sodium partial vapor pressures (about 10-7 mm Hg). While at lower pressures the argon is serving its function well to slow down relaxation by inhibiting wall diffusion, at about 10 cm Hg relaxation due to sodium-argon collisions becomes the decisive factor. Nevertheless it was possible to realize a relaxation time of 0.21 sec for a 1-liter spherical bulb filled with 3 cm argon. About 0.02 sec was found for a 0.1-liter, 40 cm argon sample. In carrying out the experiments, optical pumping by circularly polarized resonance radiation was used to create an orientation of the sodium atoms which then was monitored by measuring the transmission of the pumping radiation through the sample. By suddenly reversing a small axial magnetic field, the polarization of the atoms could be made to reverse too. From the decay rates of this inverted polarization under the combined effects of relaxation and continuing optical pumping, the experimental relaxation times were deduced. The strong signals obtained are indicative of available signal to noise ratios in future radio-frequency resonance reorientation experiments using the transmission monitoring technique. A theoretical analysis of the optical pumping process, including the dynamic aspects and allowing for collisions with argon that the sodium atoms undergo while in the excited state, was carried out and used to describe the experimental data. APS Digital Backfile Archive 1893-2003 Dehmelt, H. G. oth Enthalten in The physical review Lancaster, Pa. [u.a.], 1893 105(1957), 5, Seite 1487-1489 (DE-627)NLEJ24823790X (DE-600)2177092-X 1536-6065 nnns volume:105 year:1957 number:5 pages:1487-1489 extent:3 https://www.tib.eu/de/suchen/id/aps%3Aef9d61e8cca26f134596752f923eaa3ea213adf1 Verlag Deutschlandweit zugänglich GBV_USEFLAG_U ZDB-1-APS GBV_NL_ARTICLE AR 105 1957 5 1487-1489 3 |
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(DE-627)NLEJ251728358 (DE-601)aps:ef9d61e8cca26f134596752f923eaa3ea213adf1 DE-627 ger DE-627 rakwb Slow Spin Relaxation of Optically Polarized Sodium Atoms 1957 Online-Ressource 3 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In order to obtain as narrow as possible paramagnetic resonance signals, it is of importance to investigate the conditions under which long relaxation times can be realized. In the present experiment on sodium atoms diffusing in argon gas, relaxation due to sodium-sodium collisions was minimized by employing very low sodium partial vapor pressures (about 10-7 mm Hg). While at lower pressures the argon is serving its function well to slow down relaxation by inhibiting wall diffusion, at about 10 cm Hg relaxation due to sodium-argon collisions becomes the decisive factor. Nevertheless it was possible to realize a relaxation time of 0.21 sec for a 1-liter spherical bulb filled with 3 cm argon. About 0.02 sec was found for a 0.1-liter, 40 cm argon sample. In carrying out the experiments, optical pumping by circularly polarized resonance radiation was used to create an orientation of the sodium atoms which then was monitored by measuring the transmission of the pumping radiation through the sample. By suddenly reversing a small axial magnetic field, the polarization of the atoms could be made to reverse too. From the decay rates of this inverted polarization under the combined effects of relaxation and continuing optical pumping, the experimental relaxation times were deduced. The strong signals obtained are indicative of available signal to noise ratios in future radio-frequency resonance reorientation experiments using the transmission monitoring technique. A theoretical analysis of the optical pumping process, including the dynamic aspects and allowing for collisions with argon that the sodium atoms undergo while in the excited state, was carried out and used to describe the experimental data. APS Digital Backfile Archive 1893-2003 Dehmelt, H. G. oth Enthalten in The physical review Lancaster, Pa. [u.a.], 1893 105(1957), 5, Seite 1487-1489 (DE-627)NLEJ24823790X (DE-600)2177092-X 1536-6065 nnns volume:105 year:1957 number:5 pages:1487-1489 extent:3 https://www.tib.eu/de/suchen/id/aps%3Aef9d61e8cca26f134596752f923eaa3ea213adf1 Verlag Deutschlandweit zugänglich GBV_USEFLAG_U ZDB-1-APS GBV_NL_ARTICLE AR 105 1957 5 1487-1489 3 |
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(DE-627)NLEJ251728358 (DE-601)aps:ef9d61e8cca26f134596752f923eaa3ea213adf1 DE-627 ger DE-627 rakwb Slow Spin Relaxation of Optically Polarized Sodium Atoms 1957 Online-Ressource 3 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In order to obtain as narrow as possible paramagnetic resonance signals, it is of importance to investigate the conditions under which long relaxation times can be realized. In the present experiment on sodium atoms diffusing in argon gas, relaxation due to sodium-sodium collisions was minimized by employing very low sodium partial vapor pressures (about 10-7 mm Hg). While at lower pressures the argon is serving its function well to slow down relaxation by inhibiting wall diffusion, at about 10 cm Hg relaxation due to sodium-argon collisions becomes the decisive factor. Nevertheless it was possible to realize a relaxation time of 0.21 sec for a 1-liter spherical bulb filled with 3 cm argon. About 0.02 sec was found for a 0.1-liter, 40 cm argon sample. In carrying out the experiments, optical pumping by circularly polarized resonance radiation was used to create an orientation of the sodium atoms which then was monitored by measuring the transmission of the pumping radiation through the sample. By suddenly reversing a small axial magnetic field, the polarization of the atoms could be made to reverse too. From the decay rates of this inverted polarization under the combined effects of relaxation and continuing optical pumping, the experimental relaxation times were deduced. The strong signals obtained are indicative of available signal to noise ratios in future radio-frequency resonance reorientation experiments using the transmission monitoring technique. A theoretical analysis of the optical pumping process, including the dynamic aspects and allowing for collisions with argon that the sodium atoms undergo while in the excited state, was carried out and used to describe the experimental data. APS Digital Backfile Archive 1893-2003 Dehmelt, H. G. oth Enthalten in The physical review Lancaster, Pa. [u.a.], 1893 105(1957), 5, Seite 1487-1489 (DE-627)NLEJ24823790X (DE-600)2177092-X 1536-6065 nnns volume:105 year:1957 number:5 pages:1487-1489 extent:3 https://www.tib.eu/de/suchen/id/aps%3Aef9d61e8cca26f134596752f923eaa3ea213adf1 Verlag Deutschlandweit zugänglich GBV_USEFLAG_U ZDB-1-APS GBV_NL_ARTICLE AR 105 1957 5 1487-1489 3 |
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(DE-627)NLEJ251728358 (DE-601)aps:ef9d61e8cca26f134596752f923eaa3ea213adf1 DE-627 ger DE-627 rakwb Slow Spin Relaxation of Optically Polarized Sodium Atoms 1957 Online-Ressource 3 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In order to obtain as narrow as possible paramagnetic resonance signals, it is of importance to investigate the conditions under which long relaxation times can be realized. In the present experiment on sodium atoms diffusing in argon gas, relaxation due to sodium-sodium collisions was minimized by employing very low sodium partial vapor pressures (about 10-7 mm Hg). While at lower pressures the argon is serving its function well to slow down relaxation by inhibiting wall diffusion, at about 10 cm Hg relaxation due to sodium-argon collisions becomes the decisive factor. Nevertheless it was possible to realize a relaxation time of 0.21 sec for a 1-liter spherical bulb filled with 3 cm argon. About 0.02 sec was found for a 0.1-liter, 40 cm argon sample. In carrying out the experiments, optical pumping by circularly polarized resonance radiation was used to create an orientation of the sodium atoms which then was monitored by measuring the transmission of the pumping radiation through the sample. By suddenly reversing a small axial magnetic field, the polarization of the atoms could be made to reverse too. From the decay rates of this inverted polarization under the combined effects of relaxation and continuing optical pumping, the experimental relaxation times were deduced. The strong signals obtained are indicative of available signal to noise ratios in future radio-frequency resonance reorientation experiments using the transmission monitoring technique. A theoretical analysis of the optical pumping process, including the dynamic aspects and allowing for collisions with argon that the sodium atoms undergo while in the excited state, was carried out and used to describe the experimental data. APS Digital Backfile Archive 1893-2003 Dehmelt, H. G. oth Enthalten in The physical review Lancaster, Pa. [u.a.], 1893 105(1957), 5, Seite 1487-1489 (DE-627)NLEJ24823790X (DE-600)2177092-X 1536-6065 nnns volume:105 year:1957 number:5 pages:1487-1489 extent:3 https://www.tib.eu/de/suchen/id/aps%3Aef9d61e8cca26f134596752f923eaa3ea213adf1 Verlag Deutschlandweit zugänglich GBV_USEFLAG_U ZDB-1-APS GBV_NL_ARTICLE AR 105 1957 5 1487-1489 3 |
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Slow Spin Relaxation of Optically Polarized Sodium Atoms |
| abstract |
In order to obtain as narrow as possible paramagnetic resonance signals, it is of importance to investigate the conditions under which long relaxation times can be realized. In the present experiment on sodium atoms diffusing in argon gas, relaxation due to sodium-sodium collisions was minimized by employing very low sodium partial vapor pressures (about 10-7 mm Hg). While at lower pressures the argon is serving its function well to slow down relaxation by inhibiting wall diffusion, at about 10 cm Hg relaxation due to sodium-argon collisions becomes the decisive factor. Nevertheless it was possible to realize a relaxation time of 0.21 sec for a 1-liter spherical bulb filled with 3 cm argon. About 0.02 sec was found for a 0.1-liter, 40 cm argon sample. In carrying out the experiments, optical pumping by circularly polarized resonance radiation was used to create an orientation of the sodium atoms which then was monitored by measuring the transmission of the pumping radiation through the sample. By suddenly reversing a small axial magnetic field, the polarization of the atoms could be made to reverse too. From the decay rates of this inverted polarization under the combined effects of relaxation and continuing optical pumping, the experimental relaxation times were deduced. The strong signals obtained are indicative of available signal to noise ratios in future radio-frequency resonance reorientation experiments using the transmission monitoring technique. A theoretical analysis of the optical pumping process, including the dynamic aspects and allowing for collisions with argon that the sodium atoms undergo while in the excited state, was carried out and used to describe the experimental data. |
| abstractGer |
In order to obtain as narrow as possible paramagnetic resonance signals, it is of importance to investigate the conditions under which long relaxation times can be realized. In the present experiment on sodium atoms diffusing in argon gas, relaxation due to sodium-sodium collisions was minimized by employing very low sodium partial vapor pressures (about 10-7 mm Hg). While at lower pressures the argon is serving its function well to slow down relaxation by inhibiting wall diffusion, at about 10 cm Hg relaxation due to sodium-argon collisions becomes the decisive factor. Nevertheless it was possible to realize a relaxation time of 0.21 sec for a 1-liter spherical bulb filled with 3 cm argon. About 0.02 sec was found for a 0.1-liter, 40 cm argon sample. In carrying out the experiments, optical pumping by circularly polarized resonance radiation was used to create an orientation of the sodium atoms which then was monitored by measuring the transmission of the pumping radiation through the sample. By suddenly reversing a small axial magnetic field, the polarization of the atoms could be made to reverse too. From the decay rates of this inverted polarization under the combined effects of relaxation and continuing optical pumping, the experimental relaxation times were deduced. The strong signals obtained are indicative of available signal to noise ratios in future radio-frequency resonance reorientation experiments using the transmission monitoring technique. A theoretical analysis of the optical pumping process, including the dynamic aspects and allowing for collisions with argon that the sodium atoms undergo while in the excited state, was carried out and used to describe the experimental data. |
| abstract_unstemmed |
In order to obtain as narrow as possible paramagnetic resonance signals, it is of importance to investigate the conditions under which long relaxation times can be realized. In the present experiment on sodium atoms diffusing in argon gas, relaxation due to sodium-sodium collisions was minimized by employing very low sodium partial vapor pressures (about 10-7 mm Hg). While at lower pressures the argon is serving its function well to slow down relaxation by inhibiting wall diffusion, at about 10 cm Hg relaxation due to sodium-argon collisions becomes the decisive factor. Nevertheless it was possible to realize a relaxation time of 0.21 sec for a 1-liter spherical bulb filled with 3 cm argon. About 0.02 sec was found for a 0.1-liter, 40 cm argon sample. In carrying out the experiments, optical pumping by circularly polarized resonance radiation was used to create an orientation of the sodium atoms which then was monitored by measuring the transmission of the pumping radiation through the sample. By suddenly reversing a small axial magnetic field, the polarization of the atoms could be made to reverse too. From the decay rates of this inverted polarization under the combined effects of relaxation and continuing optical pumping, the experimental relaxation times were deduced. The strong signals obtained are indicative of available signal to noise ratios in future radio-frequency resonance reorientation experiments using the transmission monitoring technique. A theoretical analysis of the optical pumping process, including the dynamic aspects and allowing for collisions with argon that the sodium atoms undergo while in the excited state, was carried out and used to describe the experimental data. |
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<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000naa a22002652 4500</leader><controlfield tag="001">NLEJ251728358</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20231114112503.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">231114s1957 xx |||||o 00| ||und c</controlfield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)NLEJ251728358</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-601)aps:ef9d61e8cca26f134596752f923eaa3ea213adf1</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rakwb</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Slow Spin Relaxation of Optically Polarized Sodium Atoms</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">1957</subfield></datafield><datafield tag="300" ind1=" " ind2=" "><subfield code="a">Online-Ressource</subfield></datafield><datafield tag="300" ind1=" " ind2=" "><subfield code="a">3</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">Text</subfield><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">Computermedien</subfield><subfield code="b">c</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Online-Ressource</subfield><subfield code="b">cr</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">In order to obtain as narrow as possible paramagnetic resonance signals, it is of importance to investigate the conditions under which long relaxation times can be realized. In the present experiment on sodium atoms diffusing in argon gas, relaxation due to sodium-sodium collisions was minimized by employing very low sodium partial vapor pressures (about 10-7 mm Hg). While at lower pressures the argon is serving its function well to slow down relaxation by inhibiting wall diffusion, at about 10 cm Hg relaxation due to sodium-argon collisions becomes the decisive factor. Nevertheless it was possible to realize a relaxation time of 0.21 sec for a 1-liter spherical bulb filled with 3 cm argon. About 0.02 sec was found for a 0.1-liter, 40 cm argon sample. In carrying out the experiments, optical pumping by circularly polarized resonance radiation was used to create an orientation of the sodium atoms which then was monitored by measuring the transmission of the pumping radiation through the sample. By suddenly reversing a small axial magnetic field, the polarization of the atoms could be made to reverse too. From the decay rates of this inverted polarization under the combined effects of relaxation and continuing optical pumping, the experimental relaxation times were deduced. The strong signals obtained are indicative of available signal to noise ratios in future radio-frequency resonance reorientation experiments using the transmission monitoring technique. A theoretical analysis of the optical pumping process, including the dynamic aspects and allowing for collisions with argon that the sodium atoms undergo while in the excited state, was carried out and used to describe the experimental data.</subfield></datafield><datafield tag="533" ind1=" " ind2=" "><subfield code="f">APS Digital Backfile Archive 1893-2003</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Dehmelt, H. 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