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Near-threshold measurement of the He-4(gamma,n) reaction

Nilsson, Björn LU ; Adler, Jan-Olof LU ; Andersson, BE ; Annand, JRM ; Akkurt, I ; Boland, Mark LU ; Crawford, GI ; Fissum, Kevin LU orcid ; Hansen, Kurt LU and Harty, PD , et al. (2005) In Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics 626(1-4). p.65-71
Abstract
A near-threshold He-4(gamma, n) cross-section measurement has been performed at MAX-lab. Tagged photons from 23 < Ey < 42 MeV were directed toward a liquid He-4 target, and neutrons were detected by time-of-flight in two liquid-scintillator arrays. Seven-point angular distributions were measured for eight photon energies. The results are compared to experimental data measured at comparable energies and Recoil-Corrected Continuum Shell Model, Resonating Group Method, and recent Hyperspherical-Harmonic Expansion calculations. The angle-integrated cross-section data are peaked at a photon energy of about 28 MeV, in disagreement with the value recommended by Calarco, Berman, and Donnelly in 1983.
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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
time-of-flight, tagged photons, n), He-4(gamma, cross section
in
Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics
volume
626
issue
1-4
pages
65 - 71
publisher
Elsevier
external identifiers
  • wos:000232859700008
  • scopus:25844518715
ISSN
0370-2693
DOI
10.1016/j.physletb.2005.08.081
project
Charge-Symmetry Breaking in the Giant Dipole Resonance Region
Nucleon Knockout with Electromagnetic Beams
language
English
LU publication?
yes
id
04d32c2c-babe-40f1-b3a3-5f3f9a6f55f5 (old id 216108)
date added to LUP
2016-04-01 15:26:47
date last changed
2022-01-28 05:21:42
@article{04d32c2c-babe-40f1-b3a3-5f3f9a6f55f5,
  abstract     = {{A near-threshold He-4(gamma, n) cross-section measurement has been performed at MAX-lab. Tagged photons from 23 &lt; Ey &lt; 42 MeV were directed toward a liquid He-4 target, and neutrons were detected by time-of-flight in two liquid-scintillator arrays. Seven-point angular distributions were measured for eight photon energies. The results are compared to experimental data measured at comparable energies and Recoil-Corrected Continuum Shell Model, Resonating Group Method, and recent Hyperspherical-Harmonic Expansion calculations. The angle-integrated cross-section data are peaked at a photon energy of about 28 MeV, in disagreement with the value recommended by Calarco, Berman, and Donnelly in 1983.}},
  author       = {{Nilsson, Björn and Adler, Jan-Olof and Andersson, BE and Annand, JRM and Akkurt, I and Boland, Mark and Crawford, GI and Fissum, Kevin and Hansen, Kurt and Harty, PD and Ireland, DG and Isaksson, Lennart and Karlsson, Martin and Lundin, Magnus and McGeorge, JC and Miller, GJ and Ruijter, H and Sandell, Anders and Schröder, Bent and Sims, DA and Watts, D}},
  issn         = {{0370-2693}},
  keywords     = {{time-of-flight; tagged photons; n); He-4(gamma; cross section}},
  language     = {{eng}},
  number       = {{1-4}},
  pages        = {{65--71}},
  publisher    = {{Elsevier}},
  series       = {{Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics}},
  title        = {{Near-threshold measurement of the He-4(gamma,n) reaction}},
  url          = {{http://dx.doi.org/10.1016/j.physletb.2005.08.081}},
  doi          = {{10.1016/j.physletb.2005.08.081}},
  volume       = {{626}},
  year         = {{2005}},
}