Suitability of ion pump for evacuation of a closed He cycled Mössbauer cryostat
Abstract For Mössbauer studies at very low temperatures, the target holder kept at 11°K with the help of a closed He cycle Mössbauer shroud, has to be insulated by evacuating the outside enclosure surrounding the shroud. The target is kept in thermal contact with the cryostat cold finger through He...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Nigam, A. K. [verfasserIn] |
|---|
| Format: |
Artikel |
|---|---|
| Sprache: |
Englisch |
| Erschienen: |
1988 |
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| Schlagwörter: |
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| Anmerkung: |
© J.C. Baltzer A.G., Scientific Publishing Company 1988 |
|---|
| Übergeordnetes Werk: |
Enthalten in: Hyperfine interactions - Kluwer Academic Publishers, 1975, 42(1988), 1-4 vom: Feb., Seite 1153-1156 |
|---|---|
| Übergeordnetes Werk: |
volume:42 ; year:1988 ; number:1-4 ; month:02 ; pages:1153-1156 |
| Links: |
|---|
| DOI / URN: |
10.1007/BF02395595 |
|---|
| Katalog-ID: |
OLC2076354093 |
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| 520 | |a Abstract For Mössbauer studies at very low temperatures, the target holder kept at 11°K with the help of a closed He cycle Mössbauer shroud, has to be insulated by evacuating the outside enclosure surrounding the shroud. The target is kept in thermal contact with the cryostat cold finger through He gas at atmospheric pressure. This provides a vibrationless thermal contact between the two. The evacuation of the outside chamber has to be vibration free which can be accomplished by means of a suitable ion pump which is totally vibration free. However, use of Vac-ion pump here could not be made successful because the pump did not work at all after little pumping. To find out the cause of pump's failure, RGA was employed which showed the presence of He gas in the outside chamber at the time of purging of He gas in the internal chamber. The pump, however, worked efficiently again when the dry $ N_{2} $ gas purged in place of Helium. This points out that totally vibration free Vac-ion pumps cannot be used for evacuation of such cryostats. Here, diffusion pump was used subsequantly taking extra precautions to minimise the vibrations. | ||
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| 650 | 4 | |a Helium | |
| 650 | 4 | |a Thermal Contact | |
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| 650 | 4 | |a Cold Finger | |
| 700 | 1 | |a Pathak, R. |4 aut | |
| 700 | 1 | |a Chaturvedi, U. K. |4 aut | |
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10.1007/BF02395595 doi (DE-627)OLC2076354093 (DE-He213)BF02395595-p DE-627 ger DE-627 rakwb eng 530 VZ 33.00 bkl Nigam, A. K. verfasserin aut Suitability of ion pump for evacuation of a closed He cycled Mössbauer cryostat 1988 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © J.C. Baltzer A.G., Scientific Publishing Company 1988 Abstract For Mössbauer studies at very low temperatures, the target holder kept at 11°K with the help of a closed He cycle Mössbauer shroud, has to be insulated by evacuating the outside enclosure surrounding the shroud. The target is kept in thermal contact with the cryostat cold finger through He gas at atmospheric pressure. This provides a vibrationless thermal contact between the two. The evacuation of the outside chamber has to be vibration free which can be accomplished by means of a suitable ion pump which is totally vibration free. However, use of Vac-ion pump here could not be made successful because the pump did not work at all after little pumping. To find out the cause of pump's failure, RGA was employed which showed the presence of He gas in the outside chamber at the time of purging of He gas in the internal chamber. The pump, however, worked efficiently again when the dry $ N_{2} $ gas purged in place of Helium. This points out that totally vibration free Vac-ion pumps cannot be used for evacuation of such cryostats. Here, diffusion pump was used subsequantly taking extra precautions to minimise the vibrations. Thin Film Helium Thermal Contact Diffusion Pump Cold Finger Pathak, R. aut Chaturvedi, U. K. aut Enthalten in Hyperfine interactions Kluwer Academic Publishers, 1975 42(1988), 1-4 vom: Feb., Seite 1153-1156 (DE-627)129438685 (DE-600)194471-X (DE-576)014809028 0304-3843 nnns volume:42 year:1988 number:1-4 month:02 pages:1153-1156 https://doi.org/10.1007/BF02395595 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_20 GBV_ILN_22 GBV_ILN_40 GBV_ILN_70 GBV_ILN_2279 GBV_ILN_4012 GBV_ILN_4046 GBV_ILN_4323 33.00 VZ AR 42 1988 1-4 02 1153-1156 |
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10.1007/BF02395595 doi (DE-627)OLC2076354093 (DE-He213)BF02395595-p DE-627 ger DE-627 rakwb eng 530 VZ 33.00 bkl Nigam, A. K. verfasserin aut Suitability of ion pump for evacuation of a closed He cycled Mössbauer cryostat 1988 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © J.C. Baltzer A.G., Scientific Publishing Company 1988 Abstract For Mössbauer studies at very low temperatures, the target holder kept at 11°K with the help of a closed He cycle Mössbauer shroud, has to be insulated by evacuating the outside enclosure surrounding the shroud. The target is kept in thermal contact with the cryostat cold finger through He gas at atmospheric pressure. This provides a vibrationless thermal contact between the two. The evacuation of the outside chamber has to be vibration free which can be accomplished by means of a suitable ion pump which is totally vibration free. However, use of Vac-ion pump here could not be made successful because the pump did not work at all after little pumping. To find out the cause of pump's failure, RGA was employed which showed the presence of He gas in the outside chamber at the time of purging of He gas in the internal chamber. The pump, however, worked efficiently again when the dry $ N_{2} $ gas purged in place of Helium. This points out that totally vibration free Vac-ion pumps cannot be used for evacuation of such cryostats. Here, diffusion pump was used subsequantly taking extra precautions to minimise the vibrations. Thin Film Helium Thermal Contact Diffusion Pump Cold Finger Pathak, R. aut Chaturvedi, U. K. aut Enthalten in Hyperfine interactions Kluwer Academic Publishers, 1975 42(1988), 1-4 vom: Feb., Seite 1153-1156 (DE-627)129438685 (DE-600)194471-X (DE-576)014809028 0304-3843 nnns volume:42 year:1988 number:1-4 month:02 pages:1153-1156 https://doi.org/10.1007/BF02395595 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_20 GBV_ILN_22 GBV_ILN_40 GBV_ILN_70 GBV_ILN_2279 GBV_ILN_4012 GBV_ILN_4046 GBV_ILN_4323 33.00 VZ AR 42 1988 1-4 02 1153-1156 |
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10.1007/BF02395595 doi (DE-627)OLC2076354093 (DE-He213)BF02395595-p DE-627 ger DE-627 rakwb eng 530 VZ 33.00 bkl Nigam, A. K. verfasserin aut Suitability of ion pump for evacuation of a closed He cycled Mössbauer cryostat 1988 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © J.C. Baltzer A.G., Scientific Publishing Company 1988 Abstract For Mössbauer studies at very low temperatures, the target holder kept at 11°K with the help of a closed He cycle Mössbauer shroud, has to be insulated by evacuating the outside enclosure surrounding the shroud. The target is kept in thermal contact with the cryostat cold finger through He gas at atmospheric pressure. This provides a vibrationless thermal contact between the two. The evacuation of the outside chamber has to be vibration free which can be accomplished by means of a suitable ion pump which is totally vibration free. However, use of Vac-ion pump here could not be made successful because the pump did not work at all after little pumping. To find out the cause of pump's failure, RGA was employed which showed the presence of He gas in the outside chamber at the time of purging of He gas in the internal chamber. The pump, however, worked efficiently again when the dry $ N_{2} $ gas purged in place of Helium. This points out that totally vibration free Vac-ion pumps cannot be used for evacuation of such cryostats. Here, diffusion pump was used subsequantly taking extra precautions to minimise the vibrations. Thin Film Helium Thermal Contact Diffusion Pump Cold Finger Pathak, R. aut Chaturvedi, U. K. aut Enthalten in Hyperfine interactions Kluwer Academic Publishers, 1975 42(1988), 1-4 vom: Feb., Seite 1153-1156 (DE-627)129438685 (DE-600)194471-X (DE-576)014809028 0304-3843 nnns volume:42 year:1988 number:1-4 month:02 pages:1153-1156 https://doi.org/10.1007/BF02395595 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_20 GBV_ILN_22 GBV_ILN_40 GBV_ILN_70 GBV_ILN_2279 GBV_ILN_4012 GBV_ILN_4046 GBV_ILN_4323 33.00 VZ AR 42 1988 1-4 02 1153-1156 |
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10.1007/BF02395595 doi (DE-627)OLC2076354093 (DE-He213)BF02395595-p DE-627 ger DE-627 rakwb eng 530 VZ 33.00 bkl Nigam, A. K. verfasserin aut Suitability of ion pump for evacuation of a closed He cycled Mössbauer cryostat 1988 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © J.C. Baltzer A.G., Scientific Publishing Company 1988 Abstract For Mössbauer studies at very low temperatures, the target holder kept at 11°K with the help of a closed He cycle Mössbauer shroud, has to be insulated by evacuating the outside enclosure surrounding the shroud. The target is kept in thermal contact with the cryostat cold finger through He gas at atmospheric pressure. This provides a vibrationless thermal contact between the two. The evacuation of the outside chamber has to be vibration free which can be accomplished by means of a suitable ion pump which is totally vibration free. However, use of Vac-ion pump here could not be made successful because the pump did not work at all after little pumping. To find out the cause of pump's failure, RGA was employed which showed the presence of He gas in the outside chamber at the time of purging of He gas in the internal chamber. The pump, however, worked efficiently again when the dry $ N_{2} $ gas purged in place of Helium. This points out that totally vibration free Vac-ion pumps cannot be used for evacuation of such cryostats. Here, diffusion pump was used subsequantly taking extra precautions to minimise the vibrations. Thin Film Helium Thermal Contact Diffusion Pump Cold Finger Pathak, R. aut Chaturvedi, U. K. aut Enthalten in Hyperfine interactions Kluwer Academic Publishers, 1975 42(1988), 1-4 vom: Feb., Seite 1153-1156 (DE-627)129438685 (DE-600)194471-X (DE-576)014809028 0304-3843 nnns volume:42 year:1988 number:1-4 month:02 pages:1153-1156 https://doi.org/10.1007/BF02395595 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_20 GBV_ILN_22 GBV_ILN_40 GBV_ILN_70 GBV_ILN_2279 GBV_ILN_4012 GBV_ILN_4046 GBV_ILN_4323 33.00 VZ AR 42 1988 1-4 02 1153-1156 |
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10.1007/BF02395595 doi (DE-627)OLC2076354093 (DE-He213)BF02395595-p DE-627 ger DE-627 rakwb eng 530 VZ 33.00 bkl Nigam, A. K. verfasserin aut Suitability of ion pump for evacuation of a closed He cycled Mössbauer cryostat 1988 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © J.C. Baltzer A.G., Scientific Publishing Company 1988 Abstract For Mössbauer studies at very low temperatures, the target holder kept at 11°K with the help of a closed He cycle Mössbauer shroud, has to be insulated by evacuating the outside enclosure surrounding the shroud. The target is kept in thermal contact with the cryostat cold finger through He gas at atmospheric pressure. This provides a vibrationless thermal contact between the two. The evacuation of the outside chamber has to be vibration free which can be accomplished by means of a suitable ion pump which is totally vibration free. However, use of Vac-ion pump here could not be made successful because the pump did not work at all after little pumping. To find out the cause of pump's failure, RGA was employed which showed the presence of He gas in the outside chamber at the time of purging of He gas in the internal chamber. The pump, however, worked efficiently again when the dry $ N_{2} $ gas purged in place of Helium. This points out that totally vibration free Vac-ion pumps cannot be used for evacuation of such cryostats. Here, diffusion pump was used subsequantly taking extra precautions to minimise the vibrations. Thin Film Helium Thermal Contact Diffusion Pump Cold Finger Pathak, R. aut Chaturvedi, U. K. aut Enthalten in Hyperfine interactions Kluwer Academic Publishers, 1975 42(1988), 1-4 vom: Feb., Seite 1153-1156 (DE-627)129438685 (DE-600)194471-X (DE-576)014809028 0304-3843 nnns volume:42 year:1988 number:1-4 month:02 pages:1153-1156 https://doi.org/10.1007/BF02395595 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_20 GBV_ILN_22 GBV_ILN_40 GBV_ILN_70 GBV_ILN_2279 GBV_ILN_4012 GBV_ILN_4046 GBV_ILN_4323 33.00 VZ AR 42 1988 1-4 02 1153-1156 |
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Nigam, A. K. Pathak, R. Chaturvedi, U. K. |
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Nigam, A. K. |
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10.1007/BF02395595 |
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530 |
| title_sort |
suitability of ion pump for evacuation of a closed he cycled mössbauer cryostat |
| title_auth |
Suitability of ion pump for evacuation of a closed He cycled Mössbauer cryostat |
| abstract |
Abstract For Mössbauer studies at very low temperatures, the target holder kept at 11°K with the help of a closed He cycle Mössbauer shroud, has to be insulated by evacuating the outside enclosure surrounding the shroud. The target is kept in thermal contact with the cryostat cold finger through He gas at atmospheric pressure. This provides a vibrationless thermal contact between the two. The evacuation of the outside chamber has to be vibration free which can be accomplished by means of a suitable ion pump which is totally vibration free. However, use of Vac-ion pump here could not be made successful because the pump did not work at all after little pumping. To find out the cause of pump's failure, RGA was employed which showed the presence of He gas in the outside chamber at the time of purging of He gas in the internal chamber. The pump, however, worked efficiently again when the dry $ N_{2} $ gas purged in place of Helium. This points out that totally vibration free Vac-ion pumps cannot be used for evacuation of such cryostats. Here, diffusion pump was used subsequantly taking extra precautions to minimise the vibrations. © J.C. Baltzer A.G., Scientific Publishing Company 1988 |
| abstractGer |
Abstract For Mössbauer studies at very low temperatures, the target holder kept at 11°K with the help of a closed He cycle Mössbauer shroud, has to be insulated by evacuating the outside enclosure surrounding the shroud. The target is kept in thermal contact with the cryostat cold finger through He gas at atmospheric pressure. This provides a vibrationless thermal contact between the two. The evacuation of the outside chamber has to be vibration free which can be accomplished by means of a suitable ion pump which is totally vibration free. However, use of Vac-ion pump here could not be made successful because the pump did not work at all after little pumping. To find out the cause of pump's failure, RGA was employed which showed the presence of He gas in the outside chamber at the time of purging of He gas in the internal chamber. The pump, however, worked efficiently again when the dry $ N_{2} $ gas purged in place of Helium. This points out that totally vibration free Vac-ion pumps cannot be used for evacuation of such cryostats. Here, diffusion pump was used subsequantly taking extra precautions to minimise the vibrations. © J.C. Baltzer A.G., Scientific Publishing Company 1988 |
| abstract_unstemmed |
Abstract For Mössbauer studies at very low temperatures, the target holder kept at 11°K with the help of a closed He cycle Mössbauer shroud, has to be insulated by evacuating the outside enclosure surrounding the shroud. The target is kept in thermal contact with the cryostat cold finger through He gas at atmospheric pressure. This provides a vibrationless thermal contact between the two. The evacuation of the outside chamber has to be vibration free which can be accomplished by means of a suitable ion pump which is totally vibration free. However, use of Vac-ion pump here could not be made successful because the pump did not work at all after little pumping. To find out the cause of pump's failure, RGA was employed which showed the presence of He gas in the outside chamber at the time of purging of He gas in the internal chamber. The pump, however, worked efficiently again when the dry $ N_{2} $ gas purged in place of Helium. This points out that totally vibration free Vac-ion pumps cannot be used for evacuation of such cryostats. Here, diffusion pump was used subsequantly taking extra precautions to minimise the vibrations. © J.C. Baltzer A.G., Scientific Publishing Company 1988 |
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| title_short |
Suitability of ion pump for evacuation of a closed He cycled Mössbauer cryostat |
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