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Local suppression of collectivity in the N=80 isotones at the Z=58 subshell closure

Publication date

August 2013

DOI

10.1103/physrevc.88.021302

Publisher

COLLEGE PK

ISSN

0556-2813

Journal

2469-9985

Abstract

Background: Recent data on N=80 isotones have suggested that the proton π(1g7/2) subshell closure at Z=58 has an impact on the properties of low-lying collective states. Purpose: Knowledge of the B(E2;2+1→0+1) value of 140Nd is needed in order to test this conjecture. Method: The unstable, neutron-rich nucleus 140Nd was investigated via projectile Coulomb excitation at the REX-ISOLDE facility with the MINIBALL spectrometer. Results: The B(E2) value of 33(2) W.u. expands the N=80 systematics beyond the Z=58 subshell closure. Conclusions: The measurement demonstrates that the reduced collectivity of 138Ce is a local effect possibly due to the Z=58 subshell closure and requests refined theoretical calculations. The latter predict a smoothl...

Extracted data

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Beaumel, D.
Nalpas, L.
Pollacco, E.
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Baba, H.
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Damyanova, A
Danchev, M
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Jolie, J
Lutter, R
Pakarinen, J
Radeck, D
Rapisarda, E
Reiter, P
Scheck, M
Siebeck, B
Stora, T
Thöle, P
Thomas, T
Thürauf, M
Vermeulen, M J
Voulot, D
Warr, N
Wenander, F
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Iwasaki, H.
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Nalpas, L.
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Assié, M.
Baba, H.
Blumenfeld, Y.
De Séréville, N.
Drouart, A.
Franchoo, S.
Gillibert, A.
Guillot, J.
Hammache, F.
Keeley, N.
Lapoux, V.
Maréchal, F.
Michimasa, S.
Mougeot, X.
Mukha, I.
Okamura, H.
Otsu, H.
Ramus, A.
Roussel-Chomaz, P.
Sakurai, H.
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Sorlin, O.
Stefan, I.
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We report on the missing-mass spectroscopy of unbound 12O in the 14O(p,t) reaction at 51 AMeV

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Suzuki, D.
Iwasaki, H.
Beaumel, D.
Nalpas, L.
Pollacco, E.
Assié, M.
Baba, H.
Blumenfeld, Y.
de Séréville, N.
Drouart, A.
Franchoo, S.
Gillibert, A.
Guillot, J.
Hammache, F.
Keeley, N.
Lapoux, V.
Maréchal, F.
Michimasa, S.
Mougeot, X.
Mukha, I.
Okamura, H.
Otsu, H.
Ramus, A.
Roussel-Chomaz, P.
Sakurai, H.
Scarpaci, J.-A.
Sorlin, O.
Stefan, I.
Takechi, M.

January 2010

We report on the missing-mass spectroscopy of unbound 12O in the 14O(p,t) reaction at 51 AMeV

Breakdown of the Z = 8 shell closure in unbound 12O

Suzuki, D.
Iwasaki, H.
Beaumel, D.
Nalpas, L.
Pollacco, E.
Assié, M.
Baba, H.
Blumenfeld, Y.
de Séréville, N.
Drouart, A.
Franchoo, S.
Gillibert, A.
Guillot, J.
Hammache, F.
Keeley, N.
Lapoux, V.
Maréchal, F.
Michimasa, S.
Mougeot, X.
Mukha, I.
Okamura, H.
Otsu, H.
Ramus, A.
Roussel-Chomaz, P.
Sakurai, H.
Scarpaci, J.-A.
Sorlin, O.
Stefan, I.
Takechi, M.

January 2010

We report on the missing-mass spectroscopy of unbound 12O in the 14O(p,t) reaction at 51 AMeV

Breakdown of the Z = 8 shell closure in unbound 12O

Suzuki, D.
Iwasaki, H.
Beaumel, D.
Nalpas, L.
Pollacco, E.
Assié, M.
Baba, H.
Blumenfeld, Y.
De Séréville, N.
Drouart, A.
Franchoo, S.
Gillibert, A.
Guillot, J.
Hammache, F.
Keeley, N.
Lapoux, V.
Maréchal, F.
Michimasa, S.
Mougeot, X.
Mukha, I.
Okamura, H.
Otsu, H.
Ramus, A.
Roussel-Chomaz, P.
Sakurai, H.
Scarpaci, J.-A.
Sorlin, O.
Stefan, I.
Takechi, M.

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