This title appears in the Scientific Report :
2006
Please use the identifier:
http://hdl.handle.net/2128/11108 in citations.
Please use the identifier: http://dx.doi.org/10.1103/PhysRevC.73.034003 in citations.
New data for total 3He(gamma,p)D and 3He(gamma,pp)n cross sections compared to current theory
New data for total 3He(gamma,p)D and 3He(gamma,pp)n cross sections compared to current theory
A simultaneous measurement of the cross sections of the He-3(gamma, p) D and He-3(gamma, pp) n reactions has been performed for the first time using monoenergetic pulsed gamma-rays at < E gamma > = 10.2 and 16.0 MeV. Charged fragments from the reactions were detected with an efficiency of 100%...
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Personal Name(s): | Naito, S. |
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Nagai, Y. / Shima, T. / Makii, H. / Mishima, K. / Tamura, K. / Toyokawa, H. / Ohgaki, H. / Golak, J. / Skibinski, R. / Witala, H. / Glöckle, W. / Nogga, A. / Kamada, H. | |
Contributing Institute: |
Institut 3 (Theoretische Kernphysik); IKP-TH |
Published in: | Physical Review C Physical review / C, 73 73 (2006 2006) 3 3, S. 034003 034003 |
Imprint: |
Woodbury, NY
Inst.
2006
2006-03-17 2006-03-01 |
Physical Description: |
034003 |
DOI: |
10.1103/PhysRevC.73.034003 |
Document Type: |
Journal Article |
Research Program: |
Physik der Hadronen und Kerne |
Series Title: |
Physical Review C
73 |
Subject (ZB): | |
Link: |
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Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1103/PhysRevC.73.034003 in citations.
A simultaneous measurement of the cross sections of the He-3(gamma, p) D and He-3(gamma, pp) n reactions has been performed for the first time using monoenergetic pulsed gamma-rays at < E gamma > = 10.2 and 16.0 MeV. Charged fragments from the reactions were detected with an efficiency of 100% using a 4 pi time projection chamber containing 3He gas as an active target. The incident gamma-ray flux was measured by a gamma-ray detector. Both the track and energy loss signals of charged fragments were obtained in an off-line analysis and used to clearly identify the reaction channel. Thus, the (gamma, p) and (gamma, pp) cross sections have been determined with small uncertainty. A comparison of the new data to current theory based on the AV18+Urbana IX nuclear forces including pi- and p-like meson exchange currents shows a severe discrepancy at 10.2 MeV, while at 16.0 MeV data and theory agree within about 12%. Three-nucleon force effects are small, but in general shift the theory in the correct direction. |