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Dependence of B-12 excitation energy on its kinetic energy in the N-14 + Ag reaction at EA=35 MeV

Authors
  • Deak, F.
  • Kiss, Annamaria
  • Seres, Z.
  • Galonsky, A.
  • Gelbke, C.K.
  • Heilbronn, L.
  • Lynch, W.
  • Murakami, T.
  • Schelin, H.
  • Tsang, M.B.
  • Remington, B.A.
  • Kasagi, J.
Publication Date
Feb 01, 1989
Identifiers
DOI: 10.1103/PhysRevC.39.733
OAI: oai:inspirehep.net:293642
Source
INSPIRE-HEP
Keywords
License
Unknown
External links

Abstract

We observed the 19 keV neutron decay from the 3.388-MeV state of B12 by measuring B11-neutron coincidences in colinear geometry at several angles. The ratio of this yield to the yield of particle-stable B12 nuclei is a measure of the excitation energy of B12 fragments produced in the reaction. The extreme kinematic focusing of the 19-keV decay enabled us to obtain the dependence of this ratio on fragment kinetic energy. For B12 nuclei emitted with kinetic energies EA≲15 MeV the ratio is surprisingly constant; for B12 nuclei of higher kinetic energy it decreases monotonically.

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