Observation of the 7 MeV excited spin-flip and non-spin-flip partners in Λ16O by γ-ray spectroscopy

被引:0
|
作者
Ukai, M. [1 ,2 ]
Ajimura, S. [3 ]
Akikawa, H. [4 ]
Alburger, D. E. [5 ]
Banu, A. [6 ]
Chrien, R. E. [5 ]
Franklin, G. B. [7 ]
Franz, J. [8 ]
Hashimoto, O. [2 ]
Hayakawa, T. [3 ]
Hotchi, H. [5 ]
Imai, K. [4 ]
Kishimoto, T. [3 ]
May, M. [5 ]
Millener, D. J. [5 ]
Minami, S. [3 ]
Miura, Y. [2 ]
Miyoshi, T. [2 ]
Mizunuma, K. [2 ]
Nagae, T. [9 ]
Nakamura, S. N. [2 ]
Nakazawa, K. [1 ]
Okayasu, Y. [2 ]
Pile, P. [5 ]
Quinn, B. P. [7 ]
Rusek, A. [5 ]
Sato, Y. [9 ]
Sutter, R. [5 ]
Takahashi, H. [4 ]
Tang, L. [10 ]
Tamura, H. [2 ]
Tanida, K. [11 ]
Yuan, L. [10 ]
Zhou, S. H. [12 ]
机构
[1] Gifu Univ, Dept Phys, Gifu 5011193, Japan
[2] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan
[3] Osaka Univ, Dept Phys, Toyonaka, Osaka 5600043, Japan
[4] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan
[5] Brookhaven Natl Lab, Upton, NY 11973 USA
[6] GSI Darmstadt, D-64291 Darmstadt, Germany
[7] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA
[8] Univ Freiburg, Dept Phys, D-79104 Freiburg, Germany
[9] KEK, Inst Particle & Nucl Studies, Tsukuba, Ibaraki 3050801, Japan
[10] Hampton Univ, Dept Phys, Hampton, VA 23668 USA
[11] RIKEN, Wako, Saitama 3510198, Japan
[12] CIAE, Dept Phys, Beijing 102413, Peoples R China
关键词
D O I
10.1007/978-3-540-76367-3_5
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
We have observed three gamma-ray transitions in O-16(Lambda) from both 7MeV excited spin-flip and non-spin-flip partners (2(-), 1(2)(-)) to the ground-state doublet (1(1)(-), 0(-)) via the O-16(K-, pi(-)) reaction. We have observed three gamma-ray transitions in O-16(Lambda) from both 7MeV excited spin-flip and non-spin-flip partners (2(-), 1(2)(-)) to the ground-state doublet (1(1)(-), 0(-)) via the O-16(K-, pi(-)) reaction. The 7 MeV excitation energies of the spin-doublet members (2(-), 1(2)(-)) were determined to be 6784 +/- 4 +/- 4 keV and 6562 +/- 1 +/- 2 keV, respectively, and thus the spacing was obtained to be 222 +/- 4 +/- 5 keV. This is the first observation of the spin-flip state directly populated by the (K-, pi(-)) reaction. Moreover, such directly populated spin-flip and non-spin-flip partners were resolved for the first time.
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收藏
页码:21 / +
页数:2
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