Decomposition of M1 transitions into isoscalar and isovector, spin and orbital contributions

Y. Fujita; T. Adachi; G. P.A. Berg; B. A. Brown; H. Ejiri; H. Fujimura; H. Fujita; M. Fujiwara; K. Hara; M. N. Harakeh; K. Hatanaka; F. Hofmann; J. Kamiya; K. Katori; T. Kawabata; S. Mizutori; P. Von Neumann-Cosel; T. Noro; B. Reitz; A. Richter; Y. Shimbara; T. Shinada; H. Ueno; M. Yoshifuku; M. Yosoi

doi:10.1016/S0375-9474(01)00950-2

Decomposition of M1 transitions into isoscalar and isovector, spin and orbital contributions

Y. Fujita, T. Adachi, G. P.A. Berg, B. A. Brown, H. Ejiri, H. Fujimura, H. Fujita, M. Fujiwara, K. Hara, M. N. Harakeh, K. Hatanaka, F. Hofmann, J. Kamiya, K. Katori, T. Kawabata, S. Mizutori, P. Von Neumann-Cosel, T. Noro, B. Reitz, A. RichterY. Shimbara, T. Shinada, H. Ueno, M. Yoshifuku, M. Yosoi

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Abstract

The electromagnetic M1 operator contains not only the usually dominant isovector (IV) spin (στ) term, but also IV orbital (lτ), isoscalar (IS) spin (σ) and IS orbital (l) terms. By using the facts that IS and IV terms couple with reverse signs in analogous M1 transitions in T_z = ±1/2 mirror nuclei and that Gamow-Teller (GT) operator contains only στ term, we discuss the separation of IS and IV terms of M1 transitions in T_z = ±1/2 nuclei and the contribution of lτ term in the IV term of T_z = 0 as well as ±1/2 nuclei, respectively. In deriving the latter, effects of meson exchange currents (MEC) are corrected. γ decay and (e, e′) data are used for the study of B(M1) strengths. The B(GT) values are studied in good-resolution (³He, t) reactions at 150 MeV/nucleon.

Original language	English
Pages (from-to)	243-246
Number of pages	4
Journal	Nuclear Physics A
Volume	690
Issue number	1-3
DOIs	https://doi.org/10.1016/S0375-9474(01)00950-2
State	Published - 16 Jul 2001
Externally published	Yes

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Fujita, Y., Adachi, T., Berg, G. P. A., Brown, B. A., Ejiri, H., Fujimura, H., Fujita, H., Fujiwara, M., Hara, K., Harakeh, M. N., Hatanaka, K., Hofmann, F., Kamiya, J., Katori, K., Kawabata, T., Mizutori, S., Von Neumann-Cosel, P., Noro, T., Reitz, B., ... Yosoi, M. (2001). Decomposition of M1 transitions into isoscalar and isovector, spin and orbital contributions. Nuclear Physics A, 690(1-3), 243-246. https://doi.org/10.1016/S0375-9474(01)00950-2

@article{36a654280f01455eb3805eaf86f8a9b5,

title = "Decomposition of M1 transitions into isoscalar and isovector, spin and orbital contributions",

abstract = "The electromagnetic M1 operator contains not only the usually dominant isovector (IV) spin (στ) term, but also IV orbital (lτ), isoscalar (IS) spin (σ) and IS orbital (l) terms. By using the facts that IS and IV terms couple with reverse signs in analogous M1 transitions in Tz = ±1/2 mirror nuclei and that Gamow-Teller (GT) operator contains only στ term, we discuss the separation of IS and IV terms of M1 transitions in Tz = ±1/2 nuclei and the contribution of lτ term in the IV term of Tz = 0 as well as ±1/2 nuclei, respectively. In deriving the latter, effects of meson exchange currents (MEC) are corrected. γ decay and (e, e′) data are used for the study of B(M1) strengths. The B(GT) values are studied in good-resolution (3He, t) reactions at 150 MeV/nucleon.",

author = "Y. Fujita and T. Adachi and Berg, {G. P.A.} and Brown, {B. A.} and H. Ejiri and H. Fujimura and H. Fujita and M. Fujiwara and K. Hara and Harakeh, {M. N.} and K. Hatanaka and F. Hofmann and J. Kamiya and K. Katori and T. Kawabata and S. Mizutori and {Von Neumann-Cosel}, P. and T. Noro and B. Reitz and A. Richter and Y. Shimbara and T. Shinada and H. Ueno and M. Yoshifuku and M. Yosoi",

year = "2001",

month = jul,

day = "16",

doi = "10.1016/S0375-9474(01)00950-2",

language = "English",

volume = "690",

pages = "243--246",

journal = "Nuclear Physics A",

issn = "0375-9474",

publisher = "Elsevier",

number = "1-3",

}

Fujita, Y, Adachi, T, Berg, GPA, Brown, BA, Ejiri, H, Fujimura, H, Fujita, H, Fujiwara, M, Hara, K, Harakeh, MN, Hatanaka, K, Hofmann, F, Kamiya, J, Katori, K, Kawabata, T, Mizutori, S, Von Neumann-Cosel, P, Noro, T, Reitz, B, Richter, A, Shimbara, Y, Shinada, T, Ueno, H, Yoshifuku, M & Yosoi, M 2001, 'Decomposition of M1 transitions into isoscalar and isovector, spin and orbital contributions', Nuclear Physics A, vol. 690, no. 1-3, pp. 243-246. https://doi.org/10.1016/S0375-9474(01)00950-2

TY - JOUR

T1 - Decomposition of M1 transitions into isoscalar and isovector, spin and orbital contributions

AU - Fujita, Y.

AU - Adachi, T.

AU - Berg, G. P.A.

AU - Brown, B. A.

AU - Ejiri, H.

AU - Fujimura, H.

AU - Fujita, H.

AU - Fujiwara, M.

AU - Hara, K.

AU - Harakeh, M. N.

AU - Hatanaka, K.

AU - Hofmann, F.

AU - Kamiya, J.

AU - Katori, K.

AU - Kawabata, T.

AU - Mizutori, S.

AU - Von Neumann-Cosel, P.

AU - Noro, T.

AU - Reitz, B.

AU - Richter, A.

AU - Shimbara, Y.

AU - Shinada, T.

AU - Ueno, H.

AU - Yoshifuku, M.

AU - Yosoi, M.

PY - 2001/7/16

Y1 - 2001/7/16

N2 - The electromagnetic M1 operator contains not only the usually dominant isovector (IV) spin (στ) term, but also IV orbital (lτ), isoscalar (IS) spin (σ) and IS orbital (l) terms. By using the facts that IS and IV terms couple with reverse signs in analogous M1 transitions in Tz = ±1/2 mirror nuclei and that Gamow-Teller (GT) operator contains only στ term, we discuss the separation of IS and IV terms of M1 transitions in Tz = ±1/2 nuclei and the contribution of lτ term in the IV term of Tz = 0 as well as ±1/2 nuclei, respectively. In deriving the latter, effects of meson exchange currents (MEC) are corrected. γ decay and (e, e′) data are used for the study of B(M1) strengths. The B(GT) values are studied in good-resolution (3He, t) reactions at 150 MeV/nucleon.

AB - The electromagnetic M1 operator contains not only the usually dominant isovector (IV) spin (στ) term, but also IV orbital (lτ), isoscalar (IS) spin (σ) and IS orbital (l) terms. By using the facts that IS and IV terms couple with reverse signs in analogous M1 transitions in Tz = ±1/2 mirror nuclei and that Gamow-Teller (GT) operator contains only στ term, we discuss the separation of IS and IV terms of M1 transitions in Tz = ±1/2 nuclei and the contribution of lτ term in the IV term of Tz = 0 as well as ±1/2 nuclei, respectively. In deriving the latter, effects of meson exchange currents (MEC) are corrected. γ decay and (e, e′) data are used for the study of B(M1) strengths. The B(GT) values are studied in good-resolution (3He, t) reactions at 150 MeV/nucleon.

UR - http://www.scopus.com/inward/record.url?scp=0035899029&partnerID=8YFLogxK

U2 - 10.1016/S0375-9474(01)00950-2

DO - 10.1016/S0375-9474(01)00950-2

M3 - Article

AN - SCOPUS:0035899029

SN - 0375-9474

VL - 690

SP - 243

EP - 246

JO - Nuclear Physics A

JF - Nuclear Physics A

IS - 1-3

ER -

Decomposition of M1 transitions into isoscalar and isovector, spin and orbital contributions

Abstract

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