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Measurement of $$B(M1)$$ for the $$pi p_{3/2} nu p_{1/2}^{-1}$$ doublet in $$^{68}$$Cu

Hou, L.; Ishii, Tetsuro  ; Asai, Masato  ; Hori, Junichi; Ogawa, Kengo*; Nakada, Hitoshi*

Lifetimes of excited states in $$^{68}$$Cu were measured by the $$gamma$$-$$gamma$$-$$t$$ coincidence with two BaF$$_{2}$$ detectors through the decay of $$^{68}$$Cu$$^{m}$$ produced by the ($$n$$,$$p$$) reaction. The halflife of the 2$$^{+}$$ state at 84~keV was obtained as 7.84(8)~ns, corresponding to the $$B(M1; 2^{+}rightarrow1^{+} )$$ value of 0.00777(8)~$$mu_{N}^{2}$$. A shell model calculation with a minimum model space of $$pi p_{3/2}nu p_{1/2}^{-1}$$ gives a good prediction of this $$B(M1)$$ value by using experimental g-factors of neighboring nuclei. This small $$B(M1)$$ value can be explained by a shell model calculation with the $$f_{7/2}^{-r}(p_{3/2} f_{5/2}p_{1/2})^{n+r} (r=0,1)$$ model space.

Language

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English

Journal

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Physical Review C

Volume

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68

Number

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5

Pages

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p.054306_1 - 054306_6

Publication Year/Month

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2003/11

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Held date

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Patent information

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PDF

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Paper URL

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https://doi.org/10.1103/PhysRevC.68.054306

DOI for research data

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Keywords

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$$^{68}$$Cu; 寿命; 殻模型; M1

Research Facility

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Press Release

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Article of JAEA R&D Review

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Cooperating Institute

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Accesses

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- Accesses

InCites™

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Percentile:33.69

Category:Physics, Nuclear

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