Investigation of nuclear structure change expected for neutronrich deformed nuclei by means of lifetime measurements in sub-nanosecond region
| Project/Area Number |
21740185
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | Hiroshima University |
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Principal Investigator |
KOJIMA Yasuaki Hiroshima University, 大学院・工学研究院, 助教 (80314730)
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| Project Period (FY) |
2009 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2009: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
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| Keywords | 実験核物理 / 寿命測定 / 遅延同時計数 / ランタンブロマイドシンチレータ / 遅延同時計測 / LaBr3シンチレニタ |
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| Research Abstract |
We have developed a spectrometer consisting of a LaBr_3 and a thin plastic scintillator, aiming for use to measure level lifetimes. The spectrometer showed a good time resolution of 600ps for γ rays with energies around 100keV. This means that the spectrometer is sufficiently capable of measuring lifetimes in a time range down to sub-nanosecond. Level lifetimes observed for mass-separated ^<93>Sr and ^<148>Ce agreed with the well-evaluated previous values. The lifetime of 8.5(5)ns for the 98.2keV level in ^<148>Pr was successfully obtained for the first time.
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Report
(3 results)
Research Products
(8 results)
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[Journal Article] Neutron onequasiparticle states in 251Fm151 popula ted via the alpha decay of 255No2011
Author(s)
M.Asai, K.Tsukada, H.Haba, Y.Ishii, T.Ichikawa, A.Toyoshima, T.Ishii, Y.Nagame, I.Nishinaka, Y.Kojima, K.Sueki
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Journal Title
Related Report
Peer Reviewed
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