Pygmy dipole resonance in 208Pb

I. Poltoratska, P. Von Neumann-Cosel, A. Tamii, T. Adachi, C. A. Bertulani, J. Carter, M. Dozono, H. Fujita, K. Fujita, Y. Fujita, K. Hatanaka, M. Itoh, T. Kawabata, Y. Kalmykov, A. M. Krumbholz, E. Litvinova, H. Matsubara, K. Nakanishi, R. Neveling, H. OkamuraH. J. Ong, B. Azel-Tashenov, V. Yu Ponomarev, A. Richter, B. Rubio, H. Sakaguchi, Y. Sakemi, Y. Sasamoto, Y. Shimbara, Y. Shimizu, F. D. Smit, T. Suzuki, Y. Tameshige, J. Wambach, M. Yosoi, J. Zenihiro

Research output: Contribution to journalArticle

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Abstract

Scattering of protons of several hundred MeV is a promising new spectroscopic tool for the study of electric dipole strength in nuclei. A case study of 208Pb shows that, at very forward angles, Jπ=1- states are strongly populated via Coulomb excitation. A separation from nuclear excitation of other modes is achieved by a multipole decomposition analysis of the experimental cross sections based on theoretical angular distributions calculated within the quasiparticle-phonon model. The B(E1) transition strength distribution is extracted for excitation energies up to 9 MeV; that is, in the region of the so-called pygmy dipole resonance (PDR). The Coulomb-nuclear interference shows sensitivity to the underlying structure of the E1 transitions, which allows for the first time an experimental extraction of the electromagnetic transition strength and the energy centroid of the PDR.

Original languageEnglish
Article number041304
JournalPhysical Review C - Nuclear Physics
Volume85
Issue number4
DOIs
Publication statusPublished - Apr 20 2012

Fingerprint

dipoles
excitation
centroids
electric dipoles
multipoles
angular distribution
electromagnetism
interference
decomposition
nuclei
protons
energy
sensitivity
cross sections
scattering

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

Poltoratska, I., Von Neumann-Cosel, P., Tamii, A., Adachi, T., Bertulani, C. A., Carter, J., ... Zenihiro, J. (2012). Pygmy dipole resonance in 208Pb. Physical Review C - Nuclear Physics, 85(4), [041304]. https://doi.org/10.1103/PhysRevC.85.041304

Pygmy dipole resonance in 208Pb. / Poltoratska, I.; Von Neumann-Cosel, P.; Tamii, A.; Adachi, T.; Bertulani, C. A.; Carter, J.; Dozono, M.; Fujita, H.; Fujita, K.; Fujita, Y.; Hatanaka, K.; Itoh, M.; Kawabata, T.; Kalmykov, Y.; Krumbholz, A. M.; Litvinova, E.; Matsubara, H.; Nakanishi, K.; Neveling, R.; Okamura, H.; Ong, H. J.; Azel-Tashenov, B.; Ponomarev, V. Yu; Richter, A.; Rubio, B.; Sakaguchi, H.; Sakemi, Y.; Sasamoto, Y.; Shimbara, Y.; Shimizu, Y.; Smit, F. D.; Suzuki, T.; Tameshige, Y.; Wambach, J.; Yosoi, M.; Zenihiro, J.

In: Physical Review C - Nuclear Physics, Vol. 85, No. 4, 041304, 20.04.2012.

Research output: Contribution to journalArticle

Poltoratska, I, Von Neumann-Cosel, P, Tamii, A, Adachi, T, Bertulani, CA, Carter, J, Dozono, M, Fujita, H, Fujita, K, Fujita, Y, Hatanaka, K, Itoh, M, Kawabata, T, Kalmykov, Y, Krumbholz, AM, Litvinova, E, Matsubara, H, Nakanishi, K, Neveling, R, Okamura, H, Ong, HJ, Azel-Tashenov, B, Ponomarev, VY, Richter, A, Rubio, B, Sakaguchi, H, Sakemi, Y, Sasamoto, Y, Shimbara, Y, Shimizu, Y, Smit, FD, Suzuki, T, Tameshige, Y, Wambach, J, Yosoi, M & Zenihiro, J 2012, 'Pygmy dipole resonance in 208Pb', Physical Review C - Nuclear Physics, vol. 85, no. 4, 041304. https://doi.org/10.1103/PhysRevC.85.041304
Poltoratska I, Von Neumann-Cosel P, Tamii A, Adachi T, Bertulani CA, Carter J et al. Pygmy dipole resonance in 208Pb. Physical Review C - Nuclear Physics. 2012 Apr 20;85(4). 041304. https://doi.org/10.1103/PhysRevC.85.041304
Poltoratska, I. ; Von Neumann-Cosel, P. ; Tamii, A. ; Adachi, T. ; Bertulani, C. A. ; Carter, J. ; Dozono, M. ; Fujita, H. ; Fujita, K. ; Fujita, Y. ; Hatanaka, K. ; Itoh, M. ; Kawabata, T. ; Kalmykov, Y. ; Krumbholz, A. M. ; Litvinova, E. ; Matsubara, H. ; Nakanishi, K. ; Neveling, R. ; Okamura, H. ; Ong, H. J. ; Azel-Tashenov, B. ; Ponomarev, V. Yu ; Richter, A. ; Rubio, B. ; Sakaguchi, H. ; Sakemi, Y. ; Sasamoto, Y. ; Shimbara, Y. ; Shimizu, Y. ; Smit, F. D. ; Suzuki, T. ; Tameshige, Y. ; Wambach, J. ; Yosoi, M. ; Zenihiro, J. / Pygmy dipole resonance in 208Pb. In: Physical Review C - Nuclear Physics. 2012 ; Vol. 85, No. 4.
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