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Journal Articles

X ray spectroscopy on $$Xi$$$$^-$$ atoms (J-PARC E03, E07 and future)

Yamamoto, Takeshi; Fujita, Manami; Gogami, Toshiyuki*; Harada, Takeshi*; Hayakawa, Shuhei*; Hosomi, Kenji; Ichikawa, Yudai; Ishikawa, Yuji*; Kamata, K.*; Kanauchi, H.*; et al.

EPJ Web of Conferences, 271, p.03001_1 - 03001_5, 2022/11

https://doi.org/10.1051/epjconf/202227103001

Journal Articles

Development of a Ge detector array and an in-beam calibration system for highly precise measurement of $$Xi^-$$ atomic X-rays

Fujita, Manami; Hosomi, Kenji; Ishikawa, Yuji*; Kanauchi, H.*; Koike, Takeshi*; Ogura, Yu*; Tamura, Hirokazu; Tanida, Kiyoshi; Ukai, Mifuyu*; Yamamoto, Takeshi

Nuclear Instruments and Methods in Physics Research A, 1042, p.167439_1 - 167439_9, 2022/11

https://doi.org/10.1016/j.nima.2022.167439
 Times Cited Count：3 Percentile：34.14(Instruments & Instrumentation)

Journal Articles

Precise determination of $$^{12}_{Lambda}$$C level structure by $$gamma$$-ray spectroscopy

Hosomi, Kenji; Ma, Y.*; Ajimura, Shuhei*; Aoki, Kanae*; Dairaku, Seishi*; Fu, Y.*; Fujioka, Hiroyuki*; Futatsukawa, Kenta*; Imoto, Wataru*; Kakiguchi, Yutaka*; et al.

Progress of Theoretical and Experimental Physics (Internet), 2015(8), p.081D01_1 - 081D01_8, 2015/08

https://doi.org/10.1093/ptep/ptv113
 Times Cited Count：14 Percentile：62.91(Physics, Multidisciplinary)

Level structure of the $$^{12}_{Lambda}$$C hypernucleus was precisely determined by means of $$gamma$$-ray spectroscopy. We identified four $$gamma$$-ray transitions via the $$^{12}$$C$$(pi^{+},K^{+}gamma)$$ reaction using a germanium detector array, Hyperball2. The spacing of the ground-state doublet $$(2^{-}, 1^{-}_{1})$$ was measured to be $$161.5pm0.3$$(stat)$$pm0.3$$ (syst)keV from the direct $$M1$$ transition. Excitation energies of the $$1^{-}_{2}$$ and $$1^{-}_{3}$$ states were measured to be $$2832pm3pm4$$, keV and $$6050pm8pm7$$, keV, respectively. The obtained level energies provide definitive references for the reaction spectroscopy of $$Lambda$$ hypernuclei.

Oral presentation

Results and future prospects of X-ray measurement of $$Xi^-$$Br, $$Xi^-$$Ag, and $$Xi^-$$C atoms

Fujita, Manami; Tamura, Hirokazu; Tanida, Kiyoshi; Yamamoto, Takeshi; Ukai, Mifuyu*

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