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$$beta$$-delayed neutron spectroscopy of $$^{133}$$In

$$^{133}$$Inの$$beta$$遅延中性子分光法

Xu, Z. Y.*; Madurga, M.*; Grzywacz, R.*; King, T. T.*; Algora, A.*; Andreyev, A. N.; 他43名*

Xu, Z. Y.*; Madurga, M.*; Grzywacz, R.*; King, T. T.*; Algora, A.*; Andreyev, A. N.; 43 of others*

Nuclei in the vicinity of doubly magic nuclei away from the line of $$beta$$ stability provide a tremendous testing ground to study the evolution of nuclear shell structure as a function of the unbalance between proton and neutron numbers. The decay $$^{133}$$In (Z=49, N=83), just one proton below and one neutron above doubly magic $$^{132}$$Sn, were studied at the ISOLDE Decay Station. Using the RILIS laser ion source, separate measurements of the 9/2$$^+$$ ground state and 1/2$$^-$$ isomer were carried out. With the use of $$beta$$-delayed neutron and $$gamma$$-ray spectroscopy, the decay strengths above the neutron separation energy were quantified for the first time. The spins and parities to the neutron-unbound states based were assigned based on the $$beta$$-decay selection rules, the log ft values, and systematics. The experimental findings greatly extend the current knowledge of the $$^{133}$$In decay from previous works, providing the $$beta$$-strength distribution southeast of $$^{132}$$Sn.

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パーセンタイル:87.68

分野:Physics, Nuclear

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