Signature of a possible α-cluster state in N=Z doubly-magic 56Ni
An inelastic α -scattering experiment on the unstable N = Z , doubly-magic 56 Ni nucleus was performed in inverse kinematics at an incident energy of 50 A.MeV at GANIL. High multiplicity for α -particle emission was observed within the limited phase-space of the experimental setup. This observation...
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| creator | Bagchi, S. Akimune, H. Gibelin, J. Harakeh, M. N. Kalantar-Nayestanaki, N. Achouri, N. L. Bastin, B. Boretzky, K. Bouzomita, H. Caamaño, M. Càceres, L. Damoy, S. Delaunay, F. Fernández-Domínguez, B. Fujiwara, M. Garg, U. Grinyer, G. F. Kamalou, O. Khan, E. Krasznahorkay, A. Lhoutellier, G. Libin, J. F. Lukyanov, S. Mazurek, K. Najafi, M. A. Pancin, J. Penionzhkevich, Y. Perrot, L. Raabe, R. Rigollet, C. Roger, T. Sambi, S. Savajols, H. Senoville, M. Stodel, C. Suen, L. Thomas, J. C. Vandebrouck, M. Walle, J. Van de |
| description | An inelastic
α
-scattering experiment on the unstable
N
=
Z
, doubly-magic
56
Ni nucleus was performed in inverse kinematics at an incident energy of 50 A.MeV at GANIL. High multiplicity for
α
-particle emission was observed within the limited phase-space of the experimental setup. This observation cannot be explained by means of the statistical-decay model. The ideal classical gas model at
kT
= 0.4 MeV reproduces fairly well the experimental momentum distribution and the observed multiplicity of
α
particles corresponds to an excitation energy around 96 MeV. The method of distributed
m
α
-decay ensembles is in agreement with the experimental results if we assume that the
α
-gas state in
56
Ni exists at around
113
-
17
+
15
MeV. These results suggest that there may exist an exotic state consisting of many
α
particles at the excitation energy of
113
-
17
+
15
MeV. |
| doi_str_mv | 10.1140/epja/s10050-020-00294-7 |
| format | Article |
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α
-scattering experiment on the unstable
N
=
Z
, doubly-magic
56
Ni nucleus was performed in inverse kinematics at an incident energy of 50 A.MeV at GANIL. High multiplicity for
α
-particle emission was observed within the limited phase-space of the experimental setup. This observation cannot be explained by means of the statistical-decay model. The ideal classical gas model at
kT
= 0.4 MeV reproduces fairly well the experimental momentum distribution and the observed multiplicity of
α
particles corresponds to an excitation energy around 96 MeV. The method of distributed
m
α
-decay ensembles is in agreement with the experimental results if we assume that the
α
-gas state in
56
Ni exists at around
113
-
17
+
15
MeV. These results suggest that there may exist an exotic state consisting of many
α
particles at the excitation energy of
113
-
17
+
15
MeV.</description><identifier>ISSN: 1434-6001</identifier><identifier>EISSN: 1434-601X</identifier><identifier>DOI: 10.1140/epja/s10050-020-00294-7</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>Alpha particles ; Alpha rays ; Decay ; Excitation ; Hadrons ; Heavy Ions ; Inelastic scattering ; Inverse kinematics ; Nuclear Fusion ; Nuclear Physics ; Particle and Nuclear Physics ; Particle emission ; Physics ; Physics and Astronomy ; Regular Article – Experimental Physics</subject><ispartof>The European physical journal. A, Hadrons and nuclei, 2020, Vol.56 (11)</ispartof><rights>Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2020</rights><rights>Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2020.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><orcidid>0000-0001-9934-1902</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1140/epja/s10050-020-00294-7$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1140/epja/s10050-020-00294-7$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27901,27902,41464,42533,51294</link.rule.ids></links><search><creatorcontrib>Bagchi, S.</creatorcontrib><creatorcontrib>Akimune, H.</creatorcontrib><creatorcontrib>Gibelin, J.</creatorcontrib><creatorcontrib>Harakeh, M. N.</creatorcontrib><creatorcontrib>Kalantar-Nayestanaki, N.</creatorcontrib><creatorcontrib>Achouri, N. L.</creatorcontrib><creatorcontrib>Bastin, B.</creatorcontrib><creatorcontrib>Boretzky, K.</creatorcontrib><creatorcontrib>Bouzomita, H.</creatorcontrib><creatorcontrib>Caamaño, M.</creatorcontrib><creatorcontrib>Càceres, L.</creatorcontrib><creatorcontrib>Damoy, S.</creatorcontrib><creatorcontrib>Delaunay, F.</creatorcontrib><creatorcontrib>Fernández-Domínguez, B.</creatorcontrib><creatorcontrib>Fujiwara, M.</creatorcontrib><creatorcontrib>Garg, U.</creatorcontrib><creatorcontrib>Grinyer, G. F.</creatorcontrib><creatorcontrib>Kamalou, O.</creatorcontrib><creatorcontrib>Khan, E.</creatorcontrib><creatorcontrib>Krasznahorkay, A.</creatorcontrib><creatorcontrib>Lhoutellier, G.</creatorcontrib><creatorcontrib>Libin, J. F.</creatorcontrib><creatorcontrib>Lukyanov, S.</creatorcontrib><creatorcontrib>Mazurek, K.</creatorcontrib><creatorcontrib>Najafi, M. A.</creatorcontrib><creatorcontrib>Pancin, J.</creatorcontrib><creatorcontrib>Penionzhkevich, Y.</creatorcontrib><creatorcontrib>Perrot, L.</creatorcontrib><creatorcontrib>Raabe, R.</creatorcontrib><creatorcontrib>Rigollet, C.</creatorcontrib><creatorcontrib>Roger, T.</creatorcontrib><creatorcontrib>Sambi, S.</creatorcontrib><creatorcontrib>Savajols, H.</creatorcontrib><creatorcontrib>Senoville, M.</creatorcontrib><creatorcontrib>Stodel, C.</creatorcontrib><creatorcontrib>Suen, L.</creatorcontrib><creatorcontrib>Thomas, J. C.</creatorcontrib><creatorcontrib>Vandebrouck, M.</creatorcontrib><creatorcontrib>Walle, J. Van de</creatorcontrib><title>Signature of a possible α-cluster state in N=Z doubly-magic 56Ni</title><title>The European physical journal. A, Hadrons and nuclei</title><addtitle>Eur. Phys. J. A</addtitle><description>An inelastic
α
-scattering experiment on the unstable
N
=
Z
, doubly-magic
56
Ni nucleus was performed in inverse kinematics at an incident energy of 50 A.MeV at GANIL. High multiplicity for
α
-particle emission was observed within the limited phase-space of the experimental setup. This observation cannot be explained by means of the statistical-decay model. The ideal classical gas model at
kT
= 0.4 MeV reproduces fairly well the experimental momentum distribution and the observed multiplicity of
α
particles corresponds to an excitation energy around 96 MeV. The method of distributed
m
α
-decay ensembles is in agreement with the experimental results if we assume that the
α
-gas state in
56
Ni exists at around
113
-
17
+
15
MeV. These results suggest that there may exist an exotic state consisting of many
α
particles at the excitation energy of
113
-
17
+
15
MeV.</description><subject>Alpha particles</subject><subject>Alpha rays</subject><subject>Decay</subject><subject>Excitation</subject><subject>Hadrons</subject><subject>Heavy Ions</subject><subject>Inelastic scattering</subject><subject>Inverse kinematics</subject><subject>Nuclear Fusion</subject><subject>Nuclear Physics</subject><subject>Particle and Nuclear Physics</subject><subject>Particle emission</subject><subject>Physics</subject><subject>Physics and Astronomy</subject><subject>Regular Article – Experimental Physics</subject><issn>1434-6001</issn><issn>1434-601X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid/><recordid>eNpFkL1OwzAUhS0EEqXwDFhiNr3-SW4yMFQVf1JVBjogFst27ChVSEKcDDwWL8IzkVIEw9W5w6dzpI-QSw7XnCtY-G5nFpEDJMBATAciVwyPyIwrqVgK_OX47wd-Ss5i3AGAEnk6I8vnqmzMMPaetoEa2rUxVrb29OuTuXqMg-9pHMzgadXQzc0rLdrR1h_szZSVo0m6qc7JSTB19Be_OSfbu9vt6oGtn-4fV8s16xCRJSZTAdDIwqEJGARwsNYKRJeCT3KQXoXcBycwgCt8jrKwmeA2s0nhvJdzcnWo7fr2ffRx0Lt27JtpUQuFEjNMOE5UdqBi11dN6ft_ioPe-9J7X_rgS0--9I8vjfIbd6Ffzg</recordid><startdate>2020</startdate><enddate>2020</enddate><creator>Bagchi, S.</creator><creator>Akimune, H.</creator><creator>Gibelin, J.</creator><creator>Harakeh, M. N.</creator><creator>Kalantar-Nayestanaki, N.</creator><creator>Achouri, N. L.</creator><creator>Bastin, B.</creator><creator>Boretzky, K.</creator><creator>Bouzomita, H.</creator><creator>Caamaño, M.</creator><creator>Càceres, L.</creator><creator>Damoy, S.</creator><creator>Delaunay, F.</creator><creator>Fernández-Domínguez, B.</creator><creator>Fujiwara, M.</creator><creator>Garg, U.</creator><creator>Grinyer, G. F.</creator><creator>Kamalou, O.</creator><creator>Khan, E.</creator><creator>Krasznahorkay, A.</creator><creator>Lhoutellier, G.</creator><creator>Libin, J. F.</creator><creator>Lukyanov, S.</creator><creator>Mazurek, K.</creator><creator>Najafi, M. 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F. ; Kamalou, O. ; Khan, E. ; Krasznahorkay, A. ; Lhoutellier, G. ; Libin, J. F. ; Lukyanov, S. ; Mazurek, K. ; Najafi, M. A. ; Pancin, J. ; Penionzhkevich, Y. ; Perrot, L. ; Raabe, R. ; Rigollet, C. ; Roger, T. ; Sambi, S. ; Savajols, H. ; Senoville, M. ; Stodel, C. ; Suen, L. ; Thomas, J. C. ; Vandebrouck, M. ; Walle, J. 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L.</au><au>Bastin, B.</au><au>Boretzky, K.</au><au>Bouzomita, H.</au><au>Caamaño, M.</au><au>Càceres, L.</au><au>Damoy, S.</au><au>Delaunay, F.</au><au>Fernández-Domínguez, B.</au><au>Fujiwara, M.</au><au>Garg, U.</au><au>Grinyer, G. F.</au><au>Kamalou, O.</au><au>Khan, E.</au><au>Krasznahorkay, A.</au><au>Lhoutellier, G.</au><au>Libin, J. F.</au><au>Lukyanov, S.</au><au>Mazurek, K.</au><au>Najafi, M. A.</au><au>Pancin, J.</au><au>Penionzhkevich, Y.</au><au>Perrot, L.</au><au>Raabe, R.</au><au>Rigollet, C.</au><au>Roger, T.</au><au>Sambi, S.</au><au>Savajols, H.</au><au>Senoville, M.</au><au>Stodel, C.</au><au>Suen, L.</au><au>Thomas, J. C.</au><au>Vandebrouck, M.</au><au>Walle, J. Van de</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Signature of a possible α-cluster state in N=Z doubly-magic 56Ni</atitle><jtitle>The European physical journal. A, Hadrons and nuclei</jtitle><stitle>Eur. Phys. J. A</stitle><date>2020</date><risdate>2020</risdate><volume>56</volume><issue>11</issue><issn>1434-6001</issn><eissn>1434-601X</eissn><abstract>An inelastic
α
-scattering experiment on the unstable
N
=
Z
, doubly-magic
56
Ni nucleus was performed in inverse kinematics at an incident energy of 50 A.MeV at GANIL. High multiplicity for
α
-particle emission was observed within the limited phase-space of the experimental setup. This observation cannot be explained by means of the statistical-decay model. The ideal classical gas model at
kT
= 0.4 MeV reproduces fairly well the experimental momentum distribution and the observed multiplicity of
α
particles corresponds to an excitation energy around 96 MeV. The method of distributed
m
α
-decay ensembles is in agreement with the experimental results if we assume that the
α
-gas state in
56
Ni exists at around
113
-
17
+
15
MeV. These results suggest that there may exist an exotic state consisting of many
α
particles at the excitation energy of
113
-
17
+
15
MeV.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><doi>10.1140/epja/s10050-020-00294-7</doi><orcidid>https://orcid.org/0000-0001-9934-1902</orcidid></addata></record> |
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| issn | 1434-6001 1434-601X |
| language | eng |
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| source | SpringerLink Journals |
| subjects | Alpha particles Alpha rays Decay Excitation Hadrons Heavy Ions Inelastic scattering Inverse kinematics Nuclear Fusion Nuclear Physics Particle and Nuclear Physics Particle emission Physics Physics and Astronomy Regular Article – Experimental Physics |
| title | Signature of a possible α-cluster state in N=Z doubly-magic 56Ni |
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