Pygmy dipole resonance and dipole polarizability in 90Zr

C. Iwamoto; A. Tamii; H. Utsunomiya; H. Akimune; H. Nakada; T. Shima; T. Hashimoto; T. Yamagata; T. Kawabata; Y. Fujita; H. Matsubara; T. Suzuki; H. Fujita; Y. Shimbara; M. Nagashima; M. Sakuda; T. Mori; T. Izumi; A. Okamoto; T. Kondo; T. W. Lui; B. Bilgier; H. C. Kozer; K. Hatanaka

doi:10.1063/1.4874105

Pygmy dipole resonance and dipole polarizability in ⁹⁰Zr

C. Iwamoto, A. Tamii, H. Utsunomiya, H. Akimune, H. Nakada, T. Shima, T. Hashimoto, T. Yamagata, T. Kawabata, Y. Fujita, H. Matsubara, T. Suzuki, H. Fujita, Y. Shimbara, M. Nagashima, M. Sakuda, T. Mori, T. Izumi, A. Okamoto, T. KondoT. W. Lui, B. Bilgier, H. C. Kozer, K. Hatanaka

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Electric dipole (E1) reduced transition probability B(E1) of 90Zr was obtained by the inelastic proton scattering near 0 degrees using a 295 MeV proton beam and multipole decomposition analysis of the angular distribution by the distorted-wave Born approximation with the Hartree-Fock plus random-phase approximation model and inclusion of El Coulomb excitation, and the E1 strength of the pygmy dipole resonance was found in the vicinity of the neutron threshold in the low-energy tail of the giant dipole resonance. Using the data, we plan to determine the precise dipole polarizability α_D which is defined as an inversely energy-weighted sum value of the elecrric dipole strength. The dipole polarizability is expected to constrain the symmetry energy term of the neutron matter equation of state. Thus systematical measurement of the dipole polarizability is important.

Original language	English
Title of host publication	Origin of Matter and Evolution of Galaxies 2013 - Proceedings of the 12th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG 2013
Publisher	American Institute of Physics Inc.
Pages	426-431
Number of pages	6
ISBN (Print)	9780735412286
DOIs	https://doi.org/10.1063/1.4874105
Publication status	Published - 2014
Externally published	Yes
Event	12th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG 2013 - Tsukuba, Japan Duration: 18-11-2013 → 21-11-2013

Publication series

Name	AIP Conference Proceedings
Volume	1594
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	12th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG 2013
Country/Territory	Japan
City	Tsukuba
Period	18-11-13 → 21-11-13

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

Access to Document

10.1063/1.4874105

Cite this

Iwamoto, C., Tamii, A., Utsunomiya, H., Akimune, H., Nakada, H., Shima, T., Hashimoto, T., Yamagata, T., Kawabata, T., Fujita, Y., Matsubara, H., Suzuki, T., Fujita, H., Shimbara, Y., Nagashima, M., Sakuda, M., Mori, T., Izumi, T., Okamoto, A., ... Hatanaka, K. (2014). Pygmy dipole resonance and dipole polarizability in ⁹⁰Zr. In Origin of Matter and Evolution of Galaxies 2013 - Proceedings of the 12th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG 2013 (pp. 426-431). (AIP Conference Proceedings; Vol. 1594). American Institute of Physics Inc.. https://doi.org/10.1063/1.4874105

@inproceedings{8750402ca1194561a2be0b0e22620e2b,

title = "Pygmy dipole resonance and dipole polarizability in 90Zr",

abstract = "Electric dipole (E1) reduced transition probability B(E1) of 90Zr was obtained by the inelastic proton scattering near 0 degrees using a 295 MeV proton beam and multipole decomposition analysis of the angular distribution by the distorted-wave Born approximation with the Hartree-Fock plus random-phase approximation model and inclusion of El Coulomb excitation, and the E1 strength of the pygmy dipole resonance was found in the vicinity of the neutron threshold in the low-energy tail of the giant dipole resonance. Using the data, we plan to determine the precise dipole polarizability αD which is defined as an inversely energy-weighted sum value of the elecrric dipole strength. The dipole polarizability is expected to constrain the symmetry energy term of the neutron matter equation of state. Thus systematical measurement of the dipole polarizability is important.",

author = "C. Iwamoto and A. Tamii and H. Utsunomiya and H. Akimune and H. Nakada and T. Shima and T. Hashimoto and T. Yamagata and T. Kawabata and Y. Fujita and H. Matsubara and T. Suzuki and H. Fujita and Y. Shimbara and M. Nagashima and M. Sakuda and T. Mori and T. Izumi and A. Okamoto and T. Kondo and Lui, {T. W.} and B. Bilgier and Kozer, {H. C.} and K. Hatanaka",

year = "2014",

doi = "10.1063/1.4874105",

language = "English",

isbn = "9780735412286",

series = "AIP Conference Proceedings",

publisher = "American Institute of Physics Inc.",

pages = "426--431",

booktitle = "Origin of Matter and Evolution of Galaxies 2013 - Proceedings of the 12th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG 2013",

note = "12th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG 2013 ; Conference date: 18-11-2013 Through 21-11-2013",

}

Iwamoto, C, Tamii, A, Utsunomiya, H, Akimune, H, Nakada, H, Shima, T, Hashimoto, T, Yamagata, T, Kawabata, T, Fujita, Y, Matsubara, H, Suzuki, T, Fujita, H, Shimbara, Y, Nagashima, M, Sakuda, M, Mori, T, Izumi, T, Okamoto, A, Kondo, T, Lui, TW, Bilgier, B, Kozer, HC & Hatanaka, K 2014, Pygmy dipole resonance and dipole polarizability in ⁹⁰Zr. in Origin of Matter and Evolution of Galaxies 2013 - Proceedings of the 12th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG 2013. AIP Conference Proceedings, vol. 1594, American Institute of Physics Inc., pp. 426-431, 12th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG 2013, Tsukuba, Japan, 18-11-13. https://doi.org/10.1063/1.4874105

Pygmy dipole resonance and dipole polarizability in ⁹⁰Zr. / Iwamoto, C.; Tamii, A.; Utsunomiya, H. et al.
Origin of Matter and Evolution of Galaxies 2013 - Proceedings of the 12th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG 2013. American Institute of Physics Inc., 2014. p. 426-431 (AIP Conference Proceedings; Vol. 1594).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Pygmy dipole resonance and dipole polarizability in 90Zr

AU - Iwamoto, C.

AU - Tamii, A.

AU - Utsunomiya, H.

AU - Akimune, H.

AU - Nakada, H.

AU - Shima, T.

AU - Hashimoto, T.

AU - Yamagata, T.

AU - Kawabata, T.

AU - Fujita, Y.

AU - Matsubara, H.

AU - Suzuki, T.

AU - Fujita, H.

AU - Shimbara, Y.

AU - Nagashima, M.

AU - Sakuda, M.

AU - Mori, T.

AU - Izumi, T.

AU - Okamoto, A.

AU - Kondo, T.

AU - Lui, T. W.

AU - Bilgier, B.

AU - Kozer, H. C.

AU - Hatanaka, K.

PY - 2014

Y1 - 2014

N2 - Electric dipole (E1) reduced transition probability B(E1) of 90Zr was obtained by the inelastic proton scattering near 0 degrees using a 295 MeV proton beam and multipole decomposition analysis of the angular distribution by the distorted-wave Born approximation with the Hartree-Fock plus random-phase approximation model and inclusion of El Coulomb excitation, and the E1 strength of the pygmy dipole resonance was found in the vicinity of the neutron threshold in the low-energy tail of the giant dipole resonance. Using the data, we plan to determine the precise dipole polarizability αD which is defined as an inversely energy-weighted sum value of the elecrric dipole strength. The dipole polarizability is expected to constrain the symmetry energy term of the neutron matter equation of state. Thus systematical measurement of the dipole polarizability is important.

AB - Electric dipole (E1) reduced transition probability B(E1) of 90Zr was obtained by the inelastic proton scattering near 0 degrees using a 295 MeV proton beam and multipole decomposition analysis of the angular distribution by the distorted-wave Born approximation with the Hartree-Fock plus random-phase approximation model and inclusion of El Coulomb excitation, and the E1 strength of the pygmy dipole resonance was found in the vicinity of the neutron threshold in the low-energy tail of the giant dipole resonance. Using the data, we plan to determine the precise dipole polarizability αD which is defined as an inversely energy-weighted sum value of the elecrric dipole strength. The dipole polarizability is expected to constrain the symmetry energy term of the neutron matter equation of state. Thus systematical measurement of the dipole polarizability is important.

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U2 - 10.1063/1.4874105

DO - 10.1063/1.4874105

M3 - Conference contribution

AN - SCOPUS:84903169328

SN - 9780735412286

T3 - AIP Conference Proceedings

SP - 426

EP - 431

BT - Origin of Matter and Evolution of Galaxies 2013 - Proceedings of the 12th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG 2013

PB - American Institute of Physics Inc.

T2 - 12th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG 2013

Y2 - 18 November 2013 through 21 November 2013

ER -

Iwamoto C, Tamii A, Utsunomiya H, Akimune H, Nakada H, Shima T et al. Pygmy dipole resonance and dipole polarizability in ⁹⁰Zr. In Origin of Matter and Evolution of Galaxies 2013 - Proceedings of the 12th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG 2013. American Institute of Physics Inc. 2014. p. 426-431. (AIP Conference Proceedings). doi: 10.1063/1.4874105