Tagging of Isobars Using Energy Loss and Time-of-flight Measurements

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The technique for tagging isobars in a mixed beam by measuring energy loss by time-of-flight has been tested. With this method, isobar separation should improve by allowing more energy loss (thicker absorber), but only if one can control absorber homogeneity. Measurements of beam energy toss and energy spread obtained under such conditions were shown to be close to predicted values using both collisional and charge exchange contributions to energy straggling. The calculation of energy straggling allows us to study the efficacy of this method for isobar separation when applied to different mass ranges and beam energies. Separation in a most ... continued below

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Shapira, D. November 2, 2001.

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The technique for tagging isobars in a mixed beam by measuring energy loss by time-of-flight has been tested. With this method, isobar separation should improve by allowing more energy loss (thicker absorber), but only if one can control absorber homogeneity. Measurements of beam energy toss and energy spread obtained under such conditions were shown to be close to predicted values using both collisional and charge exchange contributions to energy straggling. The calculation of energy straggling allows us to study the efficacy of this method for isobar separation when applied to different mass ranges and beam energies. Separation in a most difficult case, an analyzed beam of A = 132 isobars at energies near 3 MeV/A has been demonstrated. The time-of-flight information can be added on line as an additional tag to the data stream for events of interest. Such event by event tagging enables one to study the effect of differences in isobaric mixture in the beam on the reaction outcome even when isobar separation is not complete.

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  • 2001 IEEE Nuclear Science Symposium and Medical Imaging Conference, San Diego, CA (US), 11/04/2001--11/10/2001

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  • Report No.: P01-112398
  • Grant Number: AC05-00OR22725
  • Office of Scientific & Technical Information Report Number: 788541
  • Archival Resource Key: ark:/67531/metadc725185

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • November 2, 2001

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  • Sept. 29, 2015, 5:31 a.m.

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  • March 24, 2016, 2:28 p.m.

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Shapira, D. Tagging of Isobars Using Energy Loss and Time-of-flight Measurements, article, November 2, 2001; Tennessee. (digital.library.unt.edu/ark:/67531/metadc725185/: accessed December 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.