Search for doubly-charged negative ions via accelerator mass spectrometry

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The Argonne FN tandem accelerator in conjunction with an Enge split-pole magnetic spectrograph has been used as a highly sensitive mass spectrometer to search for doubly charged negative ions of /sup 11/B, /sup 12/C and /sup 16/O. No evidence for the formation of these ions in an inverted sputter source and the subsequent acceleration in the tandem has been found. The following limits for the ratio of doubly-charged to singly-charged ions were measured: X/sup - -//X/sup -/ < 1 x 10/sup -15/, /sup 11/B; < 2 x 10/sup -15/, /sup 12/C; < 2 x 10/sup -14/, /sup 16/O. A relatively ... continued below

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Pages: 14

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Kutschera, W.; Frekers, D.; Pardo, R.; Rehm, K.E.; Smither, R.K. & Yntema, J.L. January 1, 1983.

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Description

The Argonne FN tandem accelerator in conjunction with an Enge split-pole magnetic spectrograph has been used as a highly sensitive mass spectrometer to search for doubly charged negative ions of /sup 11/B, /sup 12/C and /sup 16/O. No evidence for the formation of these ions in an inverted sputter source and the subsequent acceleration in the tandem has been found. The following limits for the ratio of doubly-charged to singly-charged ions were measured: X/sup - -//X/sup -/ < 1 x 10/sup -15/, /sup 11/B; < 2 x 10/sup -15/, /sup 12/C; < 2 x 10/sup -14/, /sup 16/O. A relatively abundant formation of the short lived, metastable He/sup -/ ion in the sputter source has been observed.

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Pages: 14

Notes

NTIS, PC A02/MF A01.

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  • 6. international tandem conference, CHESTER, UK, 16 Apr 1983

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  • Other: DE83014321
  • Report No.: CONF-8304105-2
  • Grant Number: W-31-109-ENG-38
  • Office of Scientific & Technical Information Report Number: 6048564
  • Archival Resource Key: ark:/67531/metadc1103271

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • January 1, 1983

Added to The UNT Digital Library

  • Feb. 18, 2018, 3:59 p.m.

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  • April 19, 2018, 1:16 p.m.

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Kutschera, W.; Frekers, D.; Pardo, R.; Rehm, K.E.; Smither, R.K. & Yntema, J.L. Search for doubly-charged negative ions via accelerator mass spectrometry, article, January 1, 1983; Illinois. (digital.library.unt.edu/ark:/67531/metadc1103271/: accessed June 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.