Direct mass measurements in the light neutron-rich region using a combined energy and time-of-flight technique

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This experiment has demonstrated that direct mass measurements can be performed (albeit of low precision in this first attempt) using the M proportional to ET/sup 2/ method. This technique has the advantage that many particle-bound nuclei, produced in fragmentation reactions can be measured simultaneously, independent of their N or Z. The main disadvantage of this approach is that both energy and time-of-flight must be measured precisely on an absolute scale. Although some mass walk with N and Z was observed in this experiment, these uncertainties were largely removed by extrapolating the smooth dependence observed for known nuclei which lie closer ... continued below

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Pages: 6

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Pillai, C.; Swenson, L.W.; Vieira, D.J.; Butler, G.W.; Wouters, J.M.; Rokni, S.H. et al. January 1, 1985.

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Description

This experiment has demonstrated that direct mass measurements can be performed (albeit of low precision in this first attempt) using the M proportional to ET/sup 2/ method. This technique has the advantage that many particle-bound nuclei, produced in fragmentation reactions can be measured simultaneously, independent of their N or Z. The main disadvantage of this approach is that both energy and time-of-flight must be measured precisely on an absolute scale. Although some mass walk with N and Z was observed in this experiment, these uncertainties were largely removed by extrapolating the smooth dependence observed for known nuclei which lie closer to the valley of ..beta..-stability. Mass measurements for several neutron-rich light nuclei ranging from /sup 17/C to /sup 26/Ne have been performed. In all cases these measurements agree with the latest mass compilation of Wapstra and Audi. The masses of /sup 20/N and /sup 24/F have been determined for the first time.

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Pages: 6

Notes

NTIS, PC A02/MF A01.

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  • International conference on nuclear data for basic and applied science, Santa Fe, NM, USA, 13 May 1985

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  • Other: DE85012758
  • Report No.: LA-UR-85-1923
  • Report No.: CONF-850507-40
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 5597328
  • Archival Resource Key: ark:/67531/metadc1093642

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  • January 1, 1985

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  • Feb. 10, 2018, 10:06 p.m.

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  • June 4, 2018, 12:57 p.m.

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Pillai, C.; Swenson, L.W.; Vieira, D.J.; Butler, G.W.; Wouters, J.M.; Rokni, S.H. et al. Direct mass measurements in the light neutron-rich region using a combined energy and time-of-flight technique, article, January 1, 1985; New Mexico. (digital.library.unt.edu/ark:/67531/metadc1093642/: accessed December 13, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.