Rapid onset of collectivity in the vicinity of 78Ni
gamma-rays following the B and B-n decay of the very neutron rich 84Ga produced by photo-fission of 238U have been studied at the newly built ISOL facility of IPN Orsay: ALTO. Two activities were observed and assigned to two B-decaying states: 84gGa, I = (0\^-) and 84mGa, I = (3\^-, 4\^-). Excitatio...
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| creator | Matthieu, Lebois Verney, David Ibrahim, Fadi Essabaa, Said Azaiez, Faiçal Mhamed, Maher Cheikh Cottereau, Evelyne Viet, Cuong Phan Ferraton, Mathieu Flanagan, Kieran Franchoo, Serge Mueller, Dominique Guillemaud Hammache, Fairouz Lau, Christophe Blanc, François Le Du, Jean François Le Mouginot, Baptiste Petrache, Costel Roussière, Brigitte Sagui, Lionel De Sereville, Nicolas Stefan, Iulian Tastet, Benoit |
| description | gamma-rays following the B and B-n decay of the very neutron rich 84Ga
produced by photo-fission of 238U have been studied at the newly built ISOL
facility of IPN Orsay: ALTO. Two activities were observed and assigned to two
B-decaying states: 84gGa, I = (0\^-) and 84mGa, I = (3\^-, 4\^-). Excitation
energies of the 2+1 and 4+1 excited states of 84Ge were measured at E(2+1) =
624.3 keV and E(4+1) = 1670.1 keV. Comparison with HFB+GCM calculations allows
to establish the collective character of this nucleus indicating a substantial
N=50 core polarization. The excitation energy of the 1/2+1 state in 83Ga known
to carry a large part of the neutron 3s1/2 strength was measured at 247.8keV.
Altogether these data allow to confirm the new single particle state ordering
which appears immediately after the double Z=28 and N=50 shell closure and to
designate 78Ni as a fragile and easily polarized doubly-magic core. |
| doi_str_mv | 10.48550/arxiv.0810.3890 |
| format | Article |
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produced by photo-fission of 238U have been studied at the newly built ISOL
facility of IPN Orsay: ALTO. Two activities were observed and assigned to two
B-decaying states: 84gGa, I = (0\^-) and 84mGa, I = (3\^-, 4\^-). Excitation
energies of the 2+1 and 4+1 excited states of 84Ge were measured at E(2+1) =
624.3 keV and E(4+1) = 1670.1 keV. Comparison with HFB+GCM calculations allows
to establish the collective character of this nucleus indicating a substantial
N=50 core polarization. The excitation energy of the 1/2+1 state in 83Ga known
to carry a large part of the neutron 3s1/2 strength was measured at 247.8keV.
Altogether these data allow to confirm the new single particle state ordering
which appears immediately after the double Z=28 and N=50 shell closure and to
designate 78Ni as a fragile and easily polarized doubly-magic core.</description><identifier>DOI: 10.48550/arxiv.0810.3890</identifier><language>eng</language><subject>Physics - Nuclear Experiment</subject><creationdate>2008-10</creationdate><rights>http://arxiv.org/licenses/nonexclusive-distrib/1.0</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>228,230,780,885</link.rule.ids><linktorsrc>$$Uhttps://arxiv.org/abs/0810.3890$$EView_record_in_Cornell_University$$FView_record_in_$$GCornell_University$$Hfree_for_read</linktorsrc><backlink>$$Uhttps://doi.org/10.48550/arXiv.0810.3890$$DView paper in arXiv$$Hfree_for_read</backlink></links><search><creatorcontrib>Matthieu, Lebois</creatorcontrib><creatorcontrib>Verney, David</creatorcontrib><creatorcontrib>Ibrahim, Fadi</creatorcontrib><creatorcontrib>Essabaa, Said</creatorcontrib><creatorcontrib>Azaiez, Faiçal</creatorcontrib><creatorcontrib>Mhamed, Maher Cheikh</creatorcontrib><creatorcontrib>Cottereau, Evelyne</creatorcontrib><creatorcontrib>Viet, Cuong Phan</creatorcontrib><creatorcontrib>Ferraton, Mathieu</creatorcontrib><creatorcontrib>Flanagan, Kieran</creatorcontrib><creatorcontrib>Franchoo, Serge</creatorcontrib><creatorcontrib>Mueller, Dominique Guillemaud</creatorcontrib><creatorcontrib>Hammache, Fairouz</creatorcontrib><creatorcontrib>Lau, Christophe</creatorcontrib><creatorcontrib>Blanc, François Le</creatorcontrib><creatorcontrib>Du, Jean François Le</creatorcontrib><creatorcontrib>Mouginot, Baptiste</creatorcontrib><creatorcontrib>Petrache, Costel</creatorcontrib><creatorcontrib>Roussière, Brigitte</creatorcontrib><creatorcontrib>Sagui, Lionel</creatorcontrib><creatorcontrib>De Sereville, Nicolas</creatorcontrib><creatorcontrib>Stefan, Iulian</creatorcontrib><creatorcontrib>Tastet, Benoit</creatorcontrib><title>Rapid onset of collectivity in the vicinity of 78Ni</title><description>gamma-rays following the B and B-n decay of the very neutron rich 84Ga
produced by photo-fission of 238U have been studied at the newly built ISOL
facility of IPN Orsay: ALTO. Two activities were observed and assigned to two
B-decaying states: 84gGa, I = (0\^-) and 84mGa, I = (3\^-, 4\^-). Excitation
energies of the 2+1 and 4+1 excited states of 84Ge were measured at E(2+1) =
624.3 keV and E(4+1) = 1670.1 keV. Comparison with HFB+GCM calculations allows
to establish the collective character of this nucleus indicating a substantial
N=50 core polarization. The excitation energy of the 1/2+1 state in 83Ga known
to carry a large part of the neutron 3s1/2 strength was measured at 247.8keV.
Altogether these data allow to confirm the new single particle state ordering
which appears immediately after the double Z=28 and N=50 shell closure and to
designate 78Ni as a fragile and easily polarized doubly-magic core.</description><subject>Physics - Nuclear Experiment</subject><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><sourceid>GOX</sourceid><recordid>eNotjssKwjAURLNxIereleQHqql59GYpxReIgrgv1zTBC7WVthT9e626GmYODIexaSzmCrQWC6yf1M0FfAYJVgyZPOODcl6VjW95FbirisK7ljpqX5xK3t4878hR2fcPT-BIYzYIWDR-8s8Ru2zWl3QXHU7bfbo6RGi0iFQMiUQDIRgD0nrntYhdgkIrBKvycBUGXA4OZG7N8mpjhT5B62wwABDkiM1-t1_p7FHTHetX1stnvbx8AzvWPd0</recordid><startdate>20081021</startdate><enddate>20081021</enddate><creator>Matthieu, Lebois</creator><creator>Verney, David</creator><creator>Ibrahim, Fadi</creator><creator>Essabaa, Said</creator><creator>Azaiez, Faiçal</creator><creator>Mhamed, Maher Cheikh</creator><creator>Cottereau, Evelyne</creator><creator>Viet, Cuong Phan</creator><creator>Ferraton, Mathieu</creator><creator>Flanagan, Kieran</creator><creator>Franchoo, Serge</creator><creator>Mueller, Dominique Guillemaud</creator><creator>Hammache, Fairouz</creator><creator>Lau, Christophe</creator><creator>Blanc, François Le</creator><creator>Du, Jean François Le</creator><creator>Mouginot, Baptiste</creator><creator>Petrache, Costel</creator><creator>Roussière, Brigitte</creator><creator>Sagui, Lionel</creator><creator>De Sereville, Nicolas</creator><creator>Stefan, Iulian</creator><creator>Tastet, Benoit</creator><scope>GOX</scope></search><sort><creationdate>20081021</creationdate><title>Rapid onset of collectivity in the vicinity of 78Ni</title><author>Matthieu, Lebois ; Verney, David ; Ibrahim, Fadi ; Essabaa, Said ; Azaiez, Faiçal ; Mhamed, Maher Cheikh ; Cottereau, Evelyne ; Viet, Cuong Phan ; Ferraton, Mathieu ; Flanagan, Kieran ; Franchoo, Serge ; Mueller, Dominique Guillemaud ; Hammache, Fairouz ; Lau, Christophe ; Blanc, François Le ; Du, Jean François Le ; Mouginot, Baptiste ; Petrache, Costel ; Roussière, Brigitte ; Sagui, Lionel ; De Sereville, Nicolas ; Stefan, Iulian ; Tastet, Benoit</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a650-41873a68ff66839ece501c7a054a894dfb068cd8c83d962b914ae7a9c9f6888f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>Physics - Nuclear Experiment</topic><toplevel>online_resources</toplevel><creatorcontrib>Matthieu, Lebois</creatorcontrib><creatorcontrib>Verney, David</creatorcontrib><creatorcontrib>Ibrahim, Fadi</creatorcontrib><creatorcontrib>Essabaa, Said</creatorcontrib><creatorcontrib>Azaiez, Faiçal</creatorcontrib><creatorcontrib>Mhamed, Maher Cheikh</creatorcontrib><creatorcontrib>Cottereau, Evelyne</creatorcontrib><creatorcontrib>Viet, Cuong Phan</creatorcontrib><creatorcontrib>Ferraton, Mathieu</creatorcontrib><creatorcontrib>Flanagan, Kieran</creatorcontrib><creatorcontrib>Franchoo, Serge</creatorcontrib><creatorcontrib>Mueller, Dominique Guillemaud</creatorcontrib><creatorcontrib>Hammache, Fairouz</creatorcontrib><creatorcontrib>Lau, Christophe</creatorcontrib><creatorcontrib>Blanc, François Le</creatorcontrib><creatorcontrib>Du, Jean François Le</creatorcontrib><creatorcontrib>Mouginot, Baptiste</creatorcontrib><creatorcontrib>Petrache, Costel</creatorcontrib><creatorcontrib>Roussière, Brigitte</creatorcontrib><creatorcontrib>Sagui, Lionel</creatorcontrib><creatorcontrib>De Sereville, Nicolas</creatorcontrib><creatorcontrib>Stefan, Iulian</creatorcontrib><creatorcontrib>Tastet, Benoit</creatorcontrib><collection>arXiv.org</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Matthieu, Lebois</au><au>Verney, David</au><au>Ibrahim, Fadi</au><au>Essabaa, Said</au><au>Azaiez, Faiçal</au><au>Mhamed, Maher Cheikh</au><au>Cottereau, Evelyne</au><au>Viet, Cuong Phan</au><au>Ferraton, Mathieu</au><au>Flanagan, Kieran</au><au>Franchoo, Serge</au><au>Mueller, Dominique Guillemaud</au><au>Hammache, Fairouz</au><au>Lau, Christophe</au><au>Blanc, François Le</au><au>Du, Jean François Le</au><au>Mouginot, Baptiste</au><au>Petrache, Costel</au><au>Roussière, Brigitte</au><au>Sagui, Lionel</au><au>De Sereville, Nicolas</au><au>Stefan, Iulian</au><au>Tastet, Benoit</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Rapid onset of collectivity in the vicinity of 78Ni</atitle><date>2008-10-21</date><risdate>2008</risdate><abstract>gamma-rays following the B and B-n decay of the very neutron rich 84Ga
produced by photo-fission of 238U have been studied at the newly built ISOL
facility of IPN Orsay: ALTO. Two activities were observed and assigned to two
B-decaying states: 84gGa, I = (0\^-) and 84mGa, I = (3\^-, 4\^-). Excitation
energies of the 2+1 and 4+1 excited states of 84Ge were measured at E(2+1) =
624.3 keV and E(4+1) = 1670.1 keV. Comparison with HFB+GCM calculations allows
to establish the collective character of this nucleus indicating a substantial
N=50 core polarization. The excitation energy of the 1/2+1 state in 83Ga known
to carry a large part of the neutron 3s1/2 strength was measured at 247.8keV.
Altogether these data allow to confirm the new single particle state ordering
which appears immediately after the double Z=28 and N=50 shell closure and to
designate 78Ni as a fragile and easily polarized doubly-magic core.</abstract><doi>10.48550/arxiv.0810.3890</doi><oa>free_for_read</oa></addata></record> |
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| title | Rapid onset of collectivity in the vicinity of 78Ni |
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