E1 and E2 cross sections of the {sup 12}C({alpha}, {gamma}){sup 16}O reaction at E{sub eff{approx}}1.2 MeV using pulsed {alpha} beams

Journal Article · Thu Aug 12 04:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3485149· OSTI ID:21426525

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

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1. Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195 (Japan)
2. Osaka University, Ibaraki, Osaka 567-0047 (Japan)
3. High Energy Accelerator Research Organization, Tsukuba, Ibaraki 305-0801 (Japan)
4. Tokyo Institute of Technology, Meguro, Tokyo 152-8550 (Japan)

We have measured 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(Tl) spectrometers to detect a {gamma}-ray from the reaction with a large S/N ratio, intense pulsed {alpha}-beams to discriminate true events from background events due to neutrons from {sup 13}C({alpha}, n){sup 16}O reaction with a time-of-flight method, and the monitoring system of target thickness. We succeeded in removing a background events due to neutrons and clearly detected the {gamma}-ray from the {sup 12}C({alpha}, {gamma}){sup 16}O reaction with high statistics.

• OSTI ID: 21426525
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1269; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCELERATORS
ALPHA REACTIONS
ANGULAR DISTRIBUTION
BARYONS
CARBON 12 TARGET
CARBON 13 TARGET
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DISTRIBUTION
E1-TRANSITIONS
E2-TRANSITIONS
ELECTROMAGNETIC RADIATION
ELECTROSTATIC ACCELERATORS
ELEMENTARY PARTICLES
ENERGY-LEVEL TRANSITIONS
EVEN-EVEN NUCLEI
FERMIONS
GAMMA RADIATION
HADRONS
IONIZING RADIATIONS
ISOTOPES
LIGHT NUCLEI
MULTIPOLE TRANSITIONS
NEUTRONS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
OXYGEN 16
OXYGEN ISOTOPES
PELLETRON ACCELERATORS
RADIATIONS
RUTHERFORD BACKSCATTERING SPECTROSCOPY
SPECTROSCOPY
STABLE ISOTOPES
TARGETS
TIME-OF-FLIGHT METHOD