E1 and E2 cross sections of the {sup 12}C({alpha},{gamma}){sup 16}O reaction at E{sub cm}{approx}1.4 Mev using pulsed {alpha} beams

Journal Article · Wed May 21 04:00:00 EDT 2008 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2943575· OSTI ID:21143469

Makii, H; Segawa, M ^[1]; Nagai, Y; Ueda, H ^[1]; Mishima, K ^[2]; Shima, T ^[3]; Igashira, M ^[4]

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1. Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195 (Japan)
2. RIKEN, Wako, Saitama 351-0198 (Japan)
3. Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047 (Japan)
4. Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology, Meguro, Tokyo 152-8550 (Japan)

We have installed a new system to measure the {gamma}-ray angular distribution of the {sup 12}C({alpha},{gamma}){sup 16}O reaction at the 3.2 MV Pelletron accelerator laboratory at Tokyo Institute of Technology to accurately determine the E1 and E2 cross sections. In this experiment, we used high efficiency anti-Compton NaI(T1) spectrometers to detect a {gamma}-ray from the reaction with a large S/N ratio, intense pulsed {alpha} beams to discriminate true events from neutron induced background with a time-of-flight (TOF) method, and the monitoring system of target thickness. We succeeded in removing a background due to neutrons and could clearly detect the {gamma}-ray from the {sup 12}C({alpha},{gamma}){sup l6}O reaction with high statistics.

• OSTI ID: 21143469
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1016; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA REACTIONS
ANGULAR DISTRIBUTION
CARBON 12
CARBON 12 TARGET
CROSS SECTIONS
E1-TRANSITIONS
E2-TRANSITIONS
GAMMA RADIATION
GAMMA SPECTROSCOPY
MEV RANGE
NAI DETECTORS
NEUTRONS
OXYGEN 16
PELLETRON ACCELERATORS
TIME-OF-FLIGHT METHOD