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decay of 
In; 
emission from neutron-unbound states in SnPiersa, M.*; Korgul, A.*; Benito, J.*; Andreyev, A. N.; 他75名*
Physical Review C, 99(2), p.024304_1 - 024304_10, 2019/02
被引用回数：11 パーセンタイル：74.44(Physics, Nuclear)Excited states in Sn were investigated through the decay of In at the ISOLDE facility. The ISOLDE Resonance Ionization Laser Ion Source (RILIS) provided isomer-selective ionization for In, allowing us to study separately, and in detail, the -decay branch of In 
= (9/2
) ground state and its = (1/2
) isomer. Thanks to the large spin difference of the two -decaying states of In, it is possible to investigate separately the lower and higher spin states in the daughter, Sn, and thus to probe independently different single-particle and single-hole levels. We report here new transitions observed in the decay of In, including those assigned to the deexcitation of the neutron-unbound states.
Zmeskal, J.*; 谷田 聖; 他75名*
Acta Physica Polonica B, 46(1), p.101 - 112, 2015/01
被引用回数：10 パーセンタイル：58.48(Physics, Multidisciplinary)The antikaon-nucleon (
) interaction close to threshold provides crucial information on the interplay between spontaneous and explicit chiral symmetry breaking in low-energy QCD. In this context, the importance of kaonic deuterium X-ray spectroscopy has been well recognized, but no experimental results have yet been obtained due to the difficulty of the measurement. We propose to measure the shift and width of the kaonic deuterium 
state with an accuracy of 60 eV and 140 eV, respectively, at J-PARC. These results, together with the kaonic hydrogen data (KpX at KEK, DEAR and SIDDHARTA at DA
NE), will then permit the determination of values of both the isospin 
and 
antikaon-nucleon scattering lengths and will provide the most stringent constraints on the antikaon-nucleon interaction, promising a breakthrough. Refined Monte Carlo studies were performed, including the investigation of background suppression factors for the described setup. These studies have demonstrated the feasibility of determining the shift and width of the kaonic deuterium atom state with the desired accuracy of 60 eV and 140 eV.
