Low-energy electric dipole response in 120Sn

A. M. Krumbholz; P. von Neumann-Cosel; T. Hashimoto; A. Tamii; T. Adachi; C. A. Bertulani; H. Fujita; Y. Fujita; E. Ganioglu; K. Hatanaka; C. Iwamoto; T. Kawabata; N. T. Khai; A. Krugmann; D. Martin; H. Matsubara; R. Neveling; H. Okamura; H. J. Ong; I. Poltoratska; V. Yu Ponomarev; A. Richter; H. Sakaguchi; Y. Shimbara; Y. Shimizu; J. Simonis; F. D. Smit; G. Susoy; J. H. Thies; T. Suzuki; M. Yosoi; J. Zenihiro

doi:10.1016/j.physletb.2015.03.023

Low-energy electric dipole response in ¹²⁰Sn

A. M. Krumbholz, P. von Neumann-Cosel, T. Hashimoto, A. Tamii, T. Adachi, C. A. Bertulani, H. Fujita, Y. Fujita, E. Ganioglu, K. Hatanaka, C. Iwamoto, T. Kawabata, N. T. Khai, A. Krugmann, D. Martin, H. Matsubara, R. Neveling, H. Okamura, H. J. Ong, I. PoltoratskaV. Yu Ponomarev, A. Richter, H. Sakaguchi, Y. Shimbara, Y. Shimizu, J. Simonis, F. D. Smit, G. Susoy, J. H. Thies, T. Suzuki, M. Yosoi, J. Zenihiro

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

58 Citations (Scopus)

Abstract

The electric dipole strength distribution in ¹²⁰Sn has been extracted from proton inelastic scattering experiments at E_p=295 MeV and at forward angles including 0°. It differs from the results of a Sn120(γ,γ') experiment and peaks at an excitation energy of 8.3 MeV. The total strength corresponds to 2.3(2)% of the energy-weighted sum rule and is more than three times larger than what is observed with the (γ, γ^') reaction. This implies a strong fragmentation of the E1 strength and/or small ground state branching ratios of the excited 1^- states.

Original language	English
Pages (from-to)	7-12
Number of pages	6
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	744
DOIs	https://doi.org/10.1016/j.physletb.2015.03.023
Publication status	Published - 2015 May 1
Externally published	Yes

Keywords

E1 strength below neutron threshold
Relativistic Coulomb excitation
Sn120(p,p'), E=295 MeV

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1016/j.physletb.2015.03.023

Cite this

Krumbholz, A. M., von Neumann-Cosel, P., Hashimoto, T., Tamii, A., Adachi, T., Bertulani, C. A., Fujita, H., Fujita, Y., Ganioglu, E., Hatanaka, K., Iwamoto, C., Kawabata, T., Khai, N. T., Krugmann, A., Martin, D., Matsubara, H., Neveling, R., Okamura, H., Ong, H. J., ... Zenihiro, J. (2015). Low-energy electric dipole response in ¹²⁰Sn. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 744, 7-12. https://doi.org/10.1016/j.physletb.2015.03.023

Krumbholz, AM, von Neumann-Cosel, P, Hashimoto, T, Tamii, A, Adachi, T, Bertulani, CA, Fujita, H, Fujita, Y, Ganioglu, E, Hatanaka, K, Iwamoto, C, Kawabata, T, Khai, NT, Krugmann, A, Martin, D, Matsubara, H, Neveling, R, Okamura, H, Ong, HJ, Poltoratska, I, Ponomarev, VY, Richter, A, Sakaguchi, H, Shimbara, Y, Shimizu, Y, Simonis, J, Smit, FD, Susoy, G, Thies, JH, Suzuki, T, Yosoi, M & Zenihiro, J 2015, 'Low-energy electric dipole response in ¹²⁰Sn', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 744, pp. 7-12. https://doi.org/10.1016/j.physletb.2015.03.023

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title = "Low-energy electric dipole response in 120Sn",

abstract = "The electric dipole strength distribution in 120Sn has been extracted from proton inelastic scattering experiments at Ep=295 MeV and at forward angles including 0°. It differs from the results of a Sn120(γ,γ') experiment and peaks at an excitation energy of 8.3 MeV. The total strength corresponds to 2.3(2)% of the energy-weighted sum rule and is more than three times larger than what is observed with the (γ, γ') reaction. This implies a strong fragmentation of the E1 strength and/or small ground state branching ratios of the excited 1- states.",

keywords = "E1 strength below neutron threshold, Relativistic Coulomb excitation, Sn120(p,p'), E=295 MeV",

author = "Krumbholz, {A. M.} and {von Neumann-Cosel}, P. and T. Hashimoto and A. Tamii and T. Adachi and Bertulani, {C. A.} and H. Fujita and Y. Fujita and E. Ganioglu and K. Hatanaka and C. Iwamoto and T. Kawabata and Khai, {N. T.} and A. Krugmann and D. Martin and H. Matsubara and R. Neveling and H. Okamura and Ong, {H. J.} and I. Poltoratska and Ponomarev, {V. Yu} and A. Richter and H. Sakaguchi and Y. Shimbara and Y. Shimizu and J. Simonis and Smit, {F. D.} and G. Susoy and Thies, {J. H.} and T. Suzuki and M. Yosoi and J. Zenihiro",

note = "Funding Information: We thank the accelerator crew at RCNP for providing excellent beams. Discussions with N. Pietralla and D. Savran are gratefully acknowledged. This work has been supported by the DFG (contracts SFB 634 and NE 679/3-1 ) and by the JSPS (grant No. 25105509 ). N.T.K. acknowledges support from NAFOSTED of Vietnam under grant 103.01-2011.17 . Publisher Copyright: {\textcopyright} 2015 The Authors.",

year = "2015",

month = may,

day = "1",

doi = "10.1016/j.physletb.2015.03.023",

language = "English",

volume = "744",

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T1 - Low-energy electric dipole response in 120Sn

AU - Krumbholz, A. M.

AU - von Neumann-Cosel, P.

AU - Hashimoto, T.

AU - Tamii, A.

AU - Adachi, T.

AU - Bertulani, C. A.

AU - Fujita, H.

AU - Fujita, Y.

AU - Ganioglu, E.

AU - Hatanaka, K.

AU - Iwamoto, C.

AU - Kawabata, T.

AU - Khai, N. T.

AU - Krugmann, A.

AU - Martin, D.

AU - Matsubara, H.

AU - Neveling, R.

AU - Okamura, H.

AU - Ong, H. J.

AU - Poltoratska, I.

AU - Ponomarev, V. Yu

AU - Richter, A.

AU - Sakaguchi, H.

AU - Shimbara, Y.

AU - Shimizu, Y.

AU - Simonis, J.

AU - Smit, F. D.

AU - Susoy, G.

AU - Thies, J. H.

AU - Suzuki, T.

AU - Yosoi, M.

AU - Zenihiro, J.

N1 - Funding Information: We thank the accelerator crew at RCNP for providing excellent beams. Discussions with N. Pietralla and D. Savran are gratefully acknowledged. This work has been supported by the DFG (contracts SFB 634 and NE 679/3-1 ) and by the JSPS (grant No. 25105509 ). N.T.K. acknowledges support from NAFOSTED of Vietnam under grant 103.01-2011.17 . Publisher Copyright: © 2015 The Authors.

PY - 2015/5/1

Y1 - 2015/5/1

N2 - The electric dipole strength distribution in 120Sn has been extracted from proton inelastic scattering experiments at Ep=295 MeV and at forward angles including 0°. It differs from the results of a Sn120(γ,γ') experiment and peaks at an excitation energy of 8.3 MeV. The total strength corresponds to 2.3(2)% of the energy-weighted sum rule and is more than three times larger than what is observed with the (γ, γ') reaction. This implies a strong fragmentation of the E1 strength and/or small ground state branching ratios of the excited 1- states.

AB - The electric dipole strength distribution in 120Sn has been extracted from proton inelastic scattering experiments at Ep=295 MeV and at forward angles including 0°. It differs from the results of a Sn120(γ,γ') experiment and peaks at an excitation energy of 8.3 MeV. The total strength corresponds to 2.3(2)% of the energy-weighted sum rule and is more than three times larger than what is observed with the (γ, γ') reaction. This implies a strong fragmentation of the E1 strength and/or small ground state branching ratios of the excited 1- states.

KW - E1 strength below neutron threshold

KW - Relativistic Coulomb excitation

KW - Sn120(p,p'), E=295 MeV

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