Decay pattern of pygmy states observed in neutron-rich Ne26

J. Gibelin, D. Beaumel, T. Motobayashi, Y. Blumenfeld, N. Aoi, H. Baba, Z. Elekes, S. Fortier, N. Frascaria, N. Fukuda, T. Gomi, K. Ishikawa, Y. Kondo, T. Kubo, V. Lima, T. Nakamura, A. Saito, Y. Satou, J. A. Scarpaci, E. TakeshitaS. Takeuchi, Takashi Teranishi, Y. Togano, A. M. Vinodkumar, Y. Yanagisawa, K. Yoshida

研究成果: ジャーナルへの寄稿記事

40 引用 (Scopus)

抄録

Coulomb excitation of the exotic neutron-rich nucleus Ne26 on a Pb208 target was measured at 58MeV/u in order to search for low-lying E1 strength above the neutron emission threshold. This radioactive beam experiment was carried out at the RIKEN Accelerator Research Facility. Using the invariant mass method in the Ne25+n channel, we observe a sizable amount of E1 strength between 6 and 10 MeV excitation energy. By performing a multipole decomposition of the differential cross section, a reduced dipole transition probability of B(E1)=0.49±0.16e2fm2 is deduced, corresponding to 4.9±1.6% of the Thomas-Reiche-Kuhn sum rule. For the first time, the decay pattern of low-lying strength in a neutron-rich nucleus is measured. The extracted decay pattern is not consistent with several mean-field theory descriptions of the pygmy states.

元の言語英語
記事番号212503
ジャーナルPhysical Review Letters
101
発行部数21
DOI
出版物ステータス出版済み - 11 19 2008

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neutrons
decay
research facilities
nuclei
neutron emission
transition probabilities
multipoles
sum rules
excitation
accelerators
dipoles
decomposition
thresholds
cross sections
energy

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

これを引用

Gibelin, J., Beaumel, D., Motobayashi, T., Blumenfeld, Y., Aoi, N., Baba, H., ... Yoshida, K. (2008). Decay pattern of pygmy states observed in neutron-rich Ne26. Physical Review Letters, 101(21), [212503]. https://doi.org/10.1103/PhysRevLett.101.212503

Decay pattern of pygmy states observed in neutron-rich Ne26. / Gibelin, J.; Beaumel, D.; Motobayashi, T.; Blumenfeld, Y.; Aoi, N.; Baba, H.; Elekes, Z.; Fortier, S.; Frascaria, N.; Fukuda, N.; Gomi, T.; Ishikawa, K.; Kondo, Y.; Kubo, T.; Lima, V.; Nakamura, T.; Saito, A.; Satou, Y.; Scarpaci, J. A.; Takeshita, E.; Takeuchi, S.; Teranishi, Takashi; Togano, Y.; Vinodkumar, A. M.; Yanagisawa, Y.; Yoshida, K.

:: Physical Review Letters, 巻 101, 番号 21, 212503, 19.11.2008.

研究成果: ジャーナルへの寄稿記事

Gibelin, J, Beaumel, D, Motobayashi, T, Blumenfeld, Y, Aoi, N, Baba, H, Elekes, Z, Fortier, S, Frascaria, N, Fukuda, N, Gomi, T, Ishikawa, K, Kondo, Y, Kubo, T, Lima, V, Nakamura, T, Saito, A, Satou, Y, Scarpaci, JA, Takeshita, E, Takeuchi, S, Teranishi, T, Togano, Y, Vinodkumar, AM, Yanagisawa, Y & Yoshida, K 2008, 'Decay pattern of pygmy states observed in neutron-rich Ne26', Physical Review Letters, 巻. 101, 番号 21, 212503. https://doi.org/10.1103/PhysRevLett.101.212503
Gibelin J, Beaumel D, Motobayashi T, Blumenfeld Y, Aoi N, Baba H その他. Decay pattern of pygmy states observed in neutron-rich Ne26. Physical Review Letters. 2008 11 19;101(21). 212503. https://doi.org/10.1103/PhysRevLett.101.212503
Gibelin, J. ; Beaumel, D. ; Motobayashi, T. ; Blumenfeld, Y. ; Aoi, N. ; Baba, H. ; Elekes, Z. ; Fortier, S. ; Frascaria, N. ; Fukuda, N. ; Gomi, T. ; Ishikawa, K. ; Kondo, Y. ; Kubo, T. ; Lima, V. ; Nakamura, T. ; Saito, A. ; Satou, Y. ; Scarpaci, J. A. ; Takeshita, E. ; Takeuchi, S. ; Teranishi, Takashi ; Togano, Y. ; Vinodkumar, A. M. ; Yanagisawa, Y. ; Yoshida, K. / Decay pattern of pygmy states observed in neutron-rich Ne26. :: Physical Review Letters. 2008 ; 巻 101, 番号 21.
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abstract = "Coulomb excitation of the exotic neutron-rich nucleus Ne26 on a Pb208 target was measured at 58MeV/u in order to search for low-lying E1 strength above the neutron emission threshold. This radioactive beam experiment was carried out at the RIKEN Accelerator Research Facility. Using the invariant mass method in the Ne25+n channel, we observe a sizable amount of E1 strength between 6 and 10 MeV excitation energy. By performing a multipole decomposition of the differential cross section, a reduced dipole transition probability of B(E1)=0.49±0.16e2fm2 is deduced, corresponding to 4.9±1.6{\%} of the Thomas-Reiche-Kuhn sum rule. For the first time, the decay pattern of low-lying strength in a neutron-rich nucleus is measured. The extracted decay pattern is not consistent with several mean-field theory descriptions of the pygmy states.",
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AU - Gibelin, J.

AU - Beaumel, D.

AU - Motobayashi, T.

AU - Blumenfeld, Y.

AU - Aoi, N.

AU - Baba, H.

AU - Elekes, Z.

AU - Fortier, S.

AU - Frascaria, N.

AU - Fukuda, N.

AU - Gomi, T.

AU - Ishikawa, K.

AU - Kondo, Y.

AU - Kubo, T.

AU - Lima, V.

AU - Nakamura, T.

AU - Saito, A.

AU - Satou, Y.

AU - Scarpaci, J. A.

AU - Takeshita, E.

AU - Takeuchi, S.

AU - Teranishi, Takashi

AU - Togano, Y.

AU - Vinodkumar, A. M.

AU - Yanagisawa, Y.

AU - Yoshida, K.

PY - 2008/11/19

Y1 - 2008/11/19

N2 - Coulomb excitation of the exotic neutron-rich nucleus Ne26 on a Pb208 target was measured at 58MeV/u in order to search for low-lying E1 strength above the neutron emission threshold. This radioactive beam experiment was carried out at the RIKEN Accelerator Research Facility. Using the invariant mass method in the Ne25+n channel, we observe a sizable amount of E1 strength between 6 and 10 MeV excitation energy. By performing a multipole decomposition of the differential cross section, a reduced dipole transition probability of B(E1)=0.49±0.16e2fm2 is deduced, corresponding to 4.9±1.6% of the Thomas-Reiche-Kuhn sum rule. For the first time, the decay pattern of low-lying strength in a neutron-rich nucleus is measured. The extracted decay pattern is not consistent with several mean-field theory descriptions of the pygmy states.

AB - Coulomb excitation of the exotic neutron-rich nucleus Ne26 on a Pb208 target was measured at 58MeV/u in order to search for low-lying E1 strength above the neutron emission threshold. This radioactive beam experiment was carried out at the RIKEN Accelerator Research Facility. Using the invariant mass method in the Ne25+n channel, we observe a sizable amount of E1 strength between 6 and 10 MeV excitation energy. By performing a multipole decomposition of the differential cross section, a reduced dipole transition probability of B(E1)=0.49±0.16e2fm2 is deduced, corresponding to 4.9±1.6% of the Thomas-Reiche-Kuhn sum rule. For the first time, the decay pattern of low-lying strength in a neutron-rich nucleus is measured. The extracted decay pattern is not consistent with several mean-field theory descriptions of the pygmy states.

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