Beta-decay study of Tz = - 2 proton-rich nucleus 24Si

Y. Ichikawa; T. Kubo; N. Aoi; V. Banerjee; A. Chakrabarti; N. Fukuda; H. Iwasaki; S. Kubono; T. Motobayashi; T. Nakabayashi; T. Nakamura; T. Nakao; T. Okumura; H. J. Ong; T. K. Onishi; D. Suzuki; H. Suzuki; M. K. Suzuki; T. Teranishi; K. N. Yamada; H. Yamaguchi; H. Sakurai

doi:10.1140/epja/i2008-10761-8

Beta-decay study of T_z = - 2 proton-rich nucleus ²⁴Si

Y. Ichikawa, T. Kubo, N. Aoi, V. Banerjee, A. Chakrabarti, N. Fukuda, H. Iwasaki, S. Kubono, T. Motobayashi, T. Nakabayashi, T. Nakamura, T. Nakao, T. Okumura, H. J. Ong, T. K. Onishi, D. Suzuki, H. Suzuki, M. K. Suzuki, T. Teranishi, K. N. YamadaH. Yamaguchi, H. Sakurai

Experimental Particle Physics

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Abstract

β-decay spectroscopy on a T_z = - 2 proton-rich nucleus ²⁴Si was performed. The decay scheme of ²⁴Si was reconstructed by the β-delayed γ-ray and proton measurements. Two β branches to the bound 1₁⁺ and 1₂⁺ states in ²⁴Al were observed for the first time. The observation of the allowed transition firmly established the spin-parity assignment for the 1₂⁺ states. The branching ratios to the 1₁⁺ and 1₂⁺ states were determined to be 31(4)% and 23.9(15)%, respectively. The branching ratios to three unbound states in ²⁴Al including a new level at 6.735MeV were also determined for the first time. The level structure of ²⁴Al was compared with its mirror nucleus ²⁴Na. The Thomas-Ehrman shift on the 1₂⁺ state indicates s-wave dominance in the state as well as a characteristic behavior of the weakly bound s-wave proton in ²⁴Al.

Original language	English
Article number	375
Pages (from-to)	375-378
Number of pages	4
Journal	European Physical Journal A
Volume	42
Issue number	3
DOIs	https://doi.org/10.1140/epja/i2008-10761-8
Publication status	Published - Dec 2009

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1140/epja/i2008-10761-8

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Ichikawa, Y., Kubo, T., Aoi, N., Banerjee, V., Chakrabarti, A., Fukuda, N., Iwasaki, H., Kubono, S., Motobayashi, T., Nakabayashi, T., Nakamura, T., Nakao, T., Okumura, T., Ong, H. J., Onishi, T. K., Suzuki, D., Suzuki, H., Suzuki, M. K., Teranishi, T., ... Sakurai, H. (2009). Beta-decay study of T_z = - 2 proton-rich nucleus ²⁴Si. European Physical Journal A, 42(3), 375-378. Article 375. https://doi.org/10.1140/epja/i2008-10761-8

Ichikawa, Y, Kubo, T, Aoi, N, Banerjee, V, Chakrabarti, A, Fukuda, N, Iwasaki, H, Kubono, S, Motobayashi, T, Nakabayashi, T, Nakamura, T, Nakao, T, Okumura, T, Ong, HJ, Onishi, TK, Suzuki, D, Suzuki, H, Suzuki, MK, Teranishi, T, Yamada, KN, Yamaguchi, H & Sakurai, H 2009, 'Beta-decay study of T_z = - 2 proton-rich nucleus ²⁴Si', European Physical Journal A, vol. 42, no. 3, 375, pp. 375-378. https://doi.org/10.1140/epja/i2008-10761-8

@article{a3fa2baf5303401c8064df80b4874367,

title = "Beta-decay study of Tz = - 2 proton-rich nucleus 24Si",

abstract = "β-decay spectroscopy on a Tz = - 2 proton-rich nucleus 24Si was performed. The decay scheme of 24Si was reconstructed by the β-delayed γ-ray and proton measurements. Two β branches to the bound 11+ and 12+ states in 24Al were observed for the first time. The observation of the allowed transition firmly established the spin-parity assignment for the 12+ states. The branching ratios to the 11+ and 12+ states were determined to be 31(4)% and 23.9(15)%, respectively. The branching ratios to three unbound states in 24Al including a new level at 6.735MeV were also determined for the first time. The level structure of 24Al was compared with its mirror nucleus 24Na. The Thomas-Ehrman shift on the 12+ state indicates s-wave dominance in the state as well as a characteristic behavior of the weakly bound s-wave proton in 24Al.",

author = "Y. Ichikawa and T. Kubo and N. Aoi and V. Banerjee and A. Chakrabarti and N. Fukuda and H. Iwasaki and S. Kubono and T. Motobayashi and T. Nakabayashi and T. Nakamura and T. Nakao and T. Okumura and Ong, {H. J.} and Onishi, {T. K.} and D. Suzuki and H. Suzuki and Suzuki, {M. K.} and T. Teranishi and Yamada, {K. N.} and H. Yamaguchi and H. Sakurai",

year = "2009",

month = dec,

doi = "10.1140/epja/i2008-10761-8",

language = "English",

volume = "42",

pages = "375--378",

journal = "European Physical Journal A",

issn = "1434-6001",

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TY - JOUR

T1 - Beta-decay study of Tz = - 2 proton-rich nucleus 24Si

AU - Ichikawa, Y.

AU - Kubo, T.

AU - Aoi, N.

AU - Banerjee, V.

AU - Chakrabarti, A.

AU - Fukuda, N.

AU - Iwasaki, H.

AU - Kubono, S.

AU - Motobayashi, T.

AU - Nakabayashi, T.

AU - Nakamura, T.

AU - Nakao, T.

AU - Okumura, T.

AU - Ong, H. J.

AU - Onishi, T. K.

AU - Suzuki, D.

AU - Suzuki, H.

AU - Suzuki, M. K.

AU - Teranishi, T.

AU - Yamada, K. N.

AU - Yamaguchi, H.

AU - Sakurai, H.

PY - 2009/12

Y1 - 2009/12

N2 - β-decay spectroscopy on a Tz = - 2 proton-rich nucleus 24Si was performed. The decay scheme of 24Si was reconstructed by the β-delayed γ-ray and proton measurements. Two β branches to the bound 11+ and 12+ states in 24Al were observed for the first time. The observation of the allowed transition firmly established the spin-parity assignment for the 12+ states. The branching ratios to the 11+ and 12+ states were determined to be 31(4)% and 23.9(15)%, respectively. The branching ratios to three unbound states in 24Al including a new level at 6.735MeV were also determined for the first time. The level structure of 24Al was compared with its mirror nucleus 24Na. The Thomas-Ehrman shift on the 12+ state indicates s-wave dominance in the state as well as a characteristic behavior of the weakly bound s-wave proton in 24Al.

AB - β-decay spectroscopy on a Tz = - 2 proton-rich nucleus 24Si was performed. The decay scheme of 24Si was reconstructed by the β-delayed γ-ray and proton measurements. Two β branches to the bound 11+ and 12+ states in 24Al were observed for the first time. The observation of the allowed transition firmly established the spin-parity assignment for the 12+ states. The branching ratios to the 11+ and 12+ states were determined to be 31(4)% and 23.9(15)%, respectively. The branching ratios to three unbound states in 24Al including a new level at 6.735MeV were also determined for the first time. The level structure of 24Al was compared with its mirror nucleus 24Na. The Thomas-Ehrman shift on the 12+ state indicates s-wave dominance in the state as well as a characteristic behavior of the weakly bound s-wave proton in 24Al.

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Beta-decay study of T_z = - 2 proton-rich nucleus ²⁴Si

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