Measurement system of the -ray angular distributions of the reaction

✍ Scribed by H. Makii; K. Mishima; M. Segawa; E. Sano; H. Ueda; T. Shima; Y. Nagai; M. Igashira; T. Ohsaki

• Publisher: Elsevier Science
• Year: 2005
• Tongue: English
• Weight: 400 KB
• Volume: 547
• Category: Article
• ISSN: 0168-9002
• DOI: 10.1016/j.nima.2005.03.164

✦ Synopsis

A new system to measure the g-ray angular distributions of the 12 Cða; gÞ 16 O reaction has been installed at the 3.2 MV Pelletron accelerator laboratory at Tokyo Institute of Technology. An intense 2.27 MeV a-beam with the pulse width of 1.9 ns was used to study the performance of the system. The g-rays from the 12 Cða; gÞ 16 O reaction were detected with three high-efficiency anti-Compton NaI(Tl) spectrometers, and they were well separated from neutron background from the 13 Cða; nÞ 16 O reaction using a time of flight method. The present study has demonstrated high sensitivity of the system to measure the g-ray angular distributions of the 12 Cða; gÞ 16 O reaction at low energy, and to determine both E1 and E2 cross-sections.