High-resolution gamma-ray spectroscopy of 7Λli

H. Tamura; K. Tanida; D. Abe; H. Akikawa; K. Araki; H. Bhang; T. Endo; Y. Fujii; T. Fukuda; O. Hashimoto; K. Imai; H. Hotchi; Y. Kakiguchi; J. H. Kim; Y. D. Kim; T. Miyoshi; T. Murakami; T. Nagae; J. Nishida; H. Noumi; H. Outa; K. Ozawa; T. Saito; J. Sasao; Y. Sato; S. Satoh; R. Sawafta; M. Sekimoto; T. Takahashi; L. Tang; H. H. Xia; S. H. Zhou; L. H. Zhu

doi:10.1016/s0375-9474(00)00107-x

High-resolution gamma-ray spectroscopy of ⁷_Λli

H. Tamura, K. Tanida, D. Abe, H. Akikawa, K. Araki, H. Bhang, T. Endo, Y. Fujii, T. Fukuda, O. Hashimoto, K. Imai, H. Hotchi, Y. Kakiguchi, J. H. Kim, Y. D. Kim, T. Miyoshi, T. Murakami, T. Nagae, J. Nishida, H. NoumiH. Outa, K. Ozawa, T. Saito, J. Sasao, Y. Sato, S. Satoh, R. Sawafta, M. Sekimoto, T. Takahashi, L. Tang, H. H. Xia, S. H. Zhou, L. H. Zhu

SCI - Physics

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Abstract

We report on the first observation of hypernuclear γ transitions using germanium detectors. Using a large-acceptance Ge detector system, we observed two γ transitions in ⁷ΛLi, the spin-flip M1(3/2⁺→1/2⁺) transition at 689±4 keV and the E2(5/2⁺→1/2⁺) transition at 2050±2 keV (preliminary). The strength of the ΛN spin-spin interaction is derived from the energy of the former transition. As for the latter transition, B(E2) was measured to be 3.9±0.6±0.4 e²fm⁴ (preliminary), which indicates a shrinkage of the nuclear size of ⁷ΛLi from ⁶Li and confirms "glue-like role" of Λ.

Original language	English
Pages (from-to)	249-256
Number of pages	8
Journal	Nuclear Physics A
Volume	670
Issue number	1-4
DOIs	https://doi.org/10.1016/s0375-9474(00)00107-x
Publication status	Published - 2000 May 8

ASJC Scopus subject areas

Nuclear and High Energy Physics

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Tamura, H., Tanida, K., Abe, D., Akikawa, H., Araki, K., Bhang, H., Endo, T., Fujii, Y., Fukuda, T., Hashimoto, O., Imai, K., Hotchi, H., Kakiguchi, Y., Kim, J. H., Kim, Y. D., Miyoshi, T., Murakami, T., Nagae, T., Nishida, J., ... Zhu, L. H. (2000). High-resolution gamma-ray spectroscopy of ⁷_Λli. Nuclear Physics A, 670(1-4), 249-256. https://doi.org/10.1016/s0375-9474(00)00107-x

Tamura, H, Tanida, K, Abe, D, Akikawa, H, Araki, K, Bhang, H, Endo, T, Fujii, Y, Fukuda, T, Hashimoto, O, Imai, K, Hotchi, H, Kakiguchi, Y, Kim, JH, Kim, YD, Miyoshi, T, Murakami, T, Nagae, T, Nishida, J, Noumi, H, Outa, H, Ozawa, K, Saito, T, Sasao, J, Sato, Y, Satoh, S, Sawafta, R, Sekimoto, M, Takahashi, T, Tang, L, Xia, HH, Zhou, SH & Zhu, LH 2000, 'High-resolution gamma-ray spectroscopy of ⁷_Λli', Nuclear Physics A, vol. 670, no. 1-4, pp. 249-256. https://doi.org/10.1016/s0375-9474(00)00107-x

@article{3edc9572185841e187e5d8147467c9fa,

title = "High-resolution gamma-ray spectroscopy of 7Λli",

abstract = "We report on the first observation of hypernuclear γ transitions using germanium detectors. Using a large-acceptance Ge detector system, we observed two γ transitions in 7ΛLi, the spin-flip M1(3/2+→1/2+) transition at 689±4 keV and the E2(5/2+→1/2+) transition at 2050±2 keV (preliminary). The strength of the ΛN spin-spin interaction is derived from the energy of the former transition. As for the latter transition, B(E2) was measured to be 3.9±0.6±0.4 e2fm4 (preliminary), which indicates a shrinkage of the nuclear size of 7ΛLi from 6Li and confirms {"}glue-like role{"} of Λ.",

author = "H. Tamura and K. Tanida and D. Abe and H. Akikawa and K. Araki and H. Bhang and T. Endo and Y. Fujii and T. Fukuda and O. Hashimoto and K. Imai and H. Hotchi and Y. Kakiguchi and Kim, {J. H.} and Kim, {Y. D.} and T. Miyoshi and T. Murakami and T. Nagae and J. Nishida and H. Noumi and H. Outa and K. Ozawa and T. Saito and J. Sasao and Y. Sato and S. Satoh and R. Sawafta and M. Sekimoto and T. Takahashi and L. Tang and Xia, {H. H.} and Zhou, {S. H.} and Zhu, {L. H.}",

note = "Funding Information: The authors thank to Prof. K. Nakamura and the KEK-PS staff for support of the experiment. They are also grateful to Prof. T. Motoba and Dr. E. Hiyama for theoretical estimations necessary to design the experiment and discussions on the results. This work is supported by Grant-In-Aid for Scientific Research on Priority Areas (Strangeness Nuclear Physics) from the Ministry of Education, Science, Sports and Culture.",

year = "2000",

month = may,

day = "8",

doi = "10.1016/s0375-9474(00)00107-x",

language = "English",

volume = "670",

pages = "249--256",

journal = "Nuclear Physics A",

issn = "0375-9474",

publisher = "Elsevier",

number = "1-4",

}

TY - JOUR

T1 - High-resolution gamma-ray spectroscopy of 7Λli

AU - Tamura, H.

AU - Tanida, K.

AU - Abe, D.

AU - Akikawa, H.

AU - Araki, K.

AU - Bhang, H.

AU - Endo, T.

AU - Fujii, Y.

AU - Fukuda, T.

AU - Hashimoto, O.

AU - Imai, K.

AU - Hotchi, H.

AU - Kakiguchi, Y.

AU - Kim, J. H.

AU - Kim, Y. D.

AU - Miyoshi, T.

AU - Murakami, T.

AU - Nagae, T.

AU - Nishida, J.

AU - Noumi, H.

AU - Outa, H.

AU - Ozawa, K.

AU - Saito, T.

AU - Sasao, J.

AU - Sato, Y.

AU - Satoh, S.

AU - Sawafta, R.

AU - Sekimoto, M.

AU - Takahashi, T.

AU - Tang, L.

AU - Xia, H. H.

AU - Zhou, S. H.

AU - Zhu, L. H.

N1 - Funding Information: The authors thank to Prof. K. Nakamura and the KEK-PS staff for support of the experiment. They are also grateful to Prof. T. Motoba and Dr. E. Hiyama for theoretical estimations necessary to design the experiment and discussions on the results. This work is supported by Grant-In-Aid for Scientific Research on Priority Areas (Strangeness Nuclear Physics) from the Ministry of Education, Science, Sports and Culture.

PY - 2000/5/8

Y1 - 2000/5/8

N2 - We report on the first observation of hypernuclear γ transitions using germanium detectors. Using a large-acceptance Ge detector system, we observed two γ transitions in 7ΛLi, the spin-flip M1(3/2+→1/2+) transition at 689±4 keV and the E2(5/2+→1/2+) transition at 2050±2 keV (preliminary). The strength of the ΛN spin-spin interaction is derived from the energy of the former transition. As for the latter transition, B(E2) was measured to be 3.9±0.6±0.4 e2fm4 (preliminary), which indicates a shrinkage of the nuclear size of 7ΛLi from 6Li and confirms "glue-like role" of Λ.

AB - We report on the first observation of hypernuclear γ transitions using germanium detectors. Using a large-acceptance Ge detector system, we observed two γ transitions in 7ΛLi, the spin-flip M1(3/2+→1/2+) transition at 689±4 keV and the E2(5/2+→1/2+) transition at 2050±2 keV (preliminary). The strength of the ΛN spin-spin interaction is derived from the energy of the former transition. As for the latter transition, B(E2) was measured to be 3.9±0.6±0.4 e2fm4 (preliminary), which indicates a shrinkage of the nuclear size of 7ΛLi from 6Li and confirms "glue-like role" of Λ.

UR - http://www.scopus.com/inward/record.url?scp=0034621140&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0034621140&partnerID=8YFLogxK

U2 - 10.1016/s0375-9474(00)00107-x

DO - 10.1016/s0375-9474(00)00107-x

M3 - Article

AN - SCOPUS:0034621140

SN - 0375-9474

VL - 670

SP - 249

EP - 256

JO - Nuclear Physics A

JF - Nuclear Physics A

IS - 1-4

ER -

High-resolution gamma-ray spectroscopy of ⁷_Λli

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