Spin-isospin excitations studied by polarized beams

H. Sakai; H. Okamura; H. Otsu; T. Wakasa; S. Fujita; N. Sakamoto; T. Uesaka; Y. Satou; T. Nonaka; T. Oonishi; S. Ishida; M. B. Greenfield; K. Hatanaka

doi:10.1016/0375-9474(96)00062-0

Spin-isospin excitations studied by polarized beams

H. Sakai, H. Okamura, H. Otsu, T. Wakasa, S. Fujita, N. Sakamoto, T. Uesaka, Y. Satou, T. Nonaka, T. Oonishi, S. Ishida, M. B. Greenfield, K. Hatanaka

Research output: Contribution to journal › Article › peer-review

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Abstract

The spin-parity Jπ of the spin dipole resonances (SDR) in ¹²N and ¹²B are investigated via the measurements of polarization observables, the transverse polarization transfer coefficient D_NN for the (p^→,n^→) reaction at 197 and 295 MeV and the tensor analyzing power A_xx for the (d^→, ²He) reaction at 270 MeV. The polarization observables, D_NN and A_xx for the peak at 4.5 MeV are consistent with the DWIA prediction with 2^- but those for the peak at 7.5 MeV contradict the predictions with an expected Jπ = 1^-. Neither polarization observables could detect any concentration of 0^- strength. The usefulness of these spin observables in identifying Jπ is shown.

Original language	English
Pages (from-to)	197-210
Number of pages	14
Journal	Nuclear Physics A
Volume	599
Issue number	1-2
DOIs	https://doi.org/10.1016/0375-9474(96)00062-0
Publication status	Published - Mar 18 1996
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1016/0375-9474(96)00062-0

Cite this

@article{966e76167bc14bcaac004a8dc27f2bf6,

title = "Spin-isospin excitations studied by polarized beams",

abstract = "The spin-parity Jπ of the spin dipole resonances (SDR) in 12N and 12B are investigated via the measurements of polarization observables, the transverse polarization transfer coefficient DNN for the (p→,n→) reaction at 197 and 295 MeV and the tensor analyzing power Axx for the (d→, 2He) reaction at 270 MeV. The polarization observables, DNN and Axx for the peak at 4.5 MeV are consistent with the DWIA prediction with 2- but those for the peak at 7.5 MeV contradict the predictions with an expected Jπ = 1-. Neither polarization observables could detect any concentration of 0- strength. The usefulness of these spin observables in identifying Jπ is shown.",

author = "H. Sakai and H. Okamura and H. Otsu and T. Wakasa and S. Fujita and N. Sakamoto and T. Uesaka and Y. Satou and T. Nonaka and T. Oonishi and S. Ishida and Greenfield, {M. B.} and K. Hatanaka",

year = "1996",

month = mar,

day = "18",

doi = "10.1016/0375-9474(96)00062-0",

language = "English",

volume = "599",

pages = "197--210",

journal = "Nuclear Physics A",

issn = "0375-9474",

publisher = "Elsevier",

number = "1-2",

}

TY - JOUR

T1 - Spin-isospin excitations studied by polarized beams

AU - Sakai, H.

AU - Okamura, H.

AU - Otsu, H.

AU - Wakasa, T.

AU - Fujita, S.

AU - Sakamoto, N.

AU - Uesaka, T.

AU - Satou, Y.

AU - Nonaka, T.

AU - Oonishi, T.

AU - Ishida, S.

AU - Greenfield, M. B.

AU - Hatanaka, K.

PY - 1996/3/18

Y1 - 1996/3/18

N2 - The spin-parity Jπ of the spin dipole resonances (SDR) in 12N and 12B are investigated via the measurements of polarization observables, the transverse polarization transfer coefficient DNN for the (p→,n→) reaction at 197 and 295 MeV and the tensor analyzing power Axx for the (d→, 2He) reaction at 270 MeV. The polarization observables, DNN and Axx for the peak at 4.5 MeV are consistent with the DWIA prediction with 2- but those for the peak at 7.5 MeV contradict the predictions with an expected Jπ = 1-. Neither polarization observables could detect any concentration of 0- strength. The usefulness of these spin observables in identifying Jπ is shown.

AB - The spin-parity Jπ of the spin dipole resonances (SDR) in 12N and 12B are investigated via the measurements of polarization observables, the transverse polarization transfer coefficient DNN for the (p→,n→) reaction at 197 and 295 MeV and the tensor analyzing power Axx for the (d→, 2He) reaction at 270 MeV. The polarization observables, DNN and Axx for the peak at 4.5 MeV are consistent with the DWIA prediction with 2- but those for the peak at 7.5 MeV contradict the predictions with an expected Jπ = 1-. Neither polarization observables could detect any concentration of 0- strength. The usefulness of these spin observables in identifying Jπ is shown.

UR - http://www.scopus.com/inward/record.url?scp=0030591964&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0030591964&partnerID=8YFLogxK

U2 - 10.1016/0375-9474(96)00062-0

DO - 10.1016/0375-9474(96)00062-0

M3 - Article

AN - SCOPUS:0030591964

SN - 0375-9474

VL - 599

SP - 197

EP - 210

JO - Nuclear Physics A

JF - Nuclear Physics A

IS - 1-2

ER -

Spin-isospin excitations studied by polarized beams

Abstract

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