Decay pattern of pygmy states observed in neutron-rich 26Ne

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. Takeshita; S. Takeuchi; T. Teranishi; Y. Togano; A. M. Vinodkumar; Y. Yanagisawa; K. Yoshida

doi:10.1142/S0218301309014275

Decay pattern of pygmy states observed in neutron-rich ²⁶Ne

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, T. Teranishi, Y. Togano, A. M. Vinodkumar, Y. Yanagisawa, K. Yoshida

Experimental Particle Physics

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

Abstract

Coulomb excitation of the exotic neutron-rich nucleus ²⁶Ne on a ²⁰⁸Pb target was measured at 58 A.MeV in order to search for low-lying E1 strength above the neutron emission threshold. The radioactive beam was produced by fragmentation of a 95 A.MeV Ar beam delivered by the RIKEN Accelerator Research Facility. The set-up included a NaI(Tl) gamma-ray array, a charged fragment hodoscope and a neutron wall. Using the invariant mass method in the ²⁵Ne+n channel, we observe by multipole decomposition a sizable amount of E1 strength between 6 and 10 MeV excitation energy. For the first time, the decay pattern of low-lying strength in a neutron-rich nucleus is measured.

Original language	English
Pages (from-to)	2050-2055
Number of pages	6
Journal	International Journal of Modern Physics E
Volume	18
Issue number	10
DOIs	https://doi.org/10.1142/S0218301309014275
Publication status	Published - Nov 2009

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Physics and Astronomy(all)

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10.1142/S0218301309014275

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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., ... Yoshida, K. (2009). Decay pattern of pygmy states observed in neutron-rich ²⁶Ne. International Journal of Modern Physics E, 18(10), 2050-2055. https://doi.org/10.1142/S0218301309014275

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 2009, 'Decay pattern of pygmy states observed in neutron-rich ²⁶Ne', International Journal of Modern Physics E, vol. 18, no. 10, pp. 2050-2055. https://doi.org/10.1142/S0218301309014275

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title = "Decay pattern of pygmy states observed in neutron-rich 26Ne",

abstract = "Coulomb excitation of the exotic neutron-rich nucleus 26Ne on a 208Pb target was measured at 58 A.MeV in order to search for low-lying E1 strength above the neutron emission threshold. The radioactive beam was produced by fragmentation of a 95 A.MeV Ar beam delivered by the RIKEN Accelerator Research Facility. The set-up included a NaI(Tl) gamma-ray array, a charged fragment hodoscope and a neutron wall. Using the invariant mass method in the 25Ne+n channel, we observe by multipole decomposition a sizable amount of E1 strength between 6 and 10 MeV excitation energy. For the first time, the decay pattern of low-lying strength in a neutron-rich nucleus is measured.",

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

note = "Funding Information: This collaboration have been financially supported by the French Ministry of Foreign Office through a Lavoisier Scholarship, the Consortium Japonais du Coll{\`e}ge doctoral Franco-Japonais and the Foreign Graduate Student Invitation Program of Tokyo Institute of Technology.",

year = "2009",

month = nov,

doi = "10.1142/S0218301309014275",

language = "English",

volume = "18",

pages = "2050--2055",

journal = "International Journal of Modern Physics E",

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T1 - Decay pattern of pygmy states observed in neutron-rich 26Ne

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, T.

AU - Togano, Y.

AU - Vinodkumar, A. M.

AU - Yanagisawa, Y.

AU - Yoshida, K.

N1 - Funding Information: This collaboration have been financially supported by the French Ministry of Foreign Office through a Lavoisier Scholarship, the Consortium Japonais du Collège doctoral Franco-Japonais and the Foreign Graduate Student Invitation Program of Tokyo Institute of Technology.

PY - 2009/11

Y1 - 2009/11

N2 - Coulomb excitation of the exotic neutron-rich nucleus 26Ne on a 208Pb target was measured at 58 A.MeV in order to search for low-lying E1 strength above the neutron emission threshold. The radioactive beam was produced by fragmentation of a 95 A.MeV Ar beam delivered by the RIKEN Accelerator Research Facility. The set-up included a NaI(Tl) gamma-ray array, a charged fragment hodoscope and a neutron wall. Using the invariant mass method in the 25Ne+n channel, we observe by multipole decomposition a sizable amount of E1 strength between 6 and 10 MeV excitation energy. For the first time, the decay pattern of low-lying strength in a neutron-rich nucleus is measured.

AB - Coulomb excitation of the exotic neutron-rich nucleus 26Ne on a 208Pb target was measured at 58 A.MeV in order to search for low-lying E1 strength above the neutron emission threshold. The radioactive beam was produced by fragmentation of a 95 A.MeV Ar beam delivered by the RIKEN Accelerator Research Facility. The set-up included a NaI(Tl) gamma-ray array, a charged fragment hodoscope and a neutron wall. Using the invariant mass method in the 25Ne+n channel, we observe by multipole decomposition a sizable amount of E1 strength between 6 and 10 MeV excitation energy. For the first time, the decay pattern of low-lying strength in a neutron-rich nucleus is measured.

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Decay pattern of pygmy states observed in neutron-rich ²⁶Ne

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