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Neutrons from proje...
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Pawłowski, P.Polish Academy of Sciences
(author)
Neutrons from projectile fragmentation at 600 MeV/nucleon
- Article/chapterEnglish2023
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Numbers
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LIBRIS-ID:oai:research.chalmers.se:68db4103-d091-4e8e-9533-f69ce90e3bbe
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https://research.chalmers.se/publication/538294URI
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https://doi.org/10.1103/PhysRevC.108.044610DOI
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Language:English
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Summary in:English
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Subject category:art swepub-publicationtype
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Subject category:ref swepub-contenttype
Notes
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The neutron emission in projectile fragmentation at relativistic energies was studied with the Large-Area-Neutron-Detector LAND coupled to the ALADIN forward spectrometer at the GSI Schwerionen-Synchrotron (SIS). Stable Sn124 and radioactive Sn107 and La124 beams with an incident energy of 600 MeV/nucleon were used to explore the N/Z dependence of the identified neutron source. A cluster-recognition algorithm is applied for identifying individual particles within the hit distributions registered with LAND. The obtained momentum distributions are extrapolated over the full phase space occupied by the neutrons from the projectile-spectator source. The mean multiplicities of spectator neutrons reach values of up to about 11 and depend strongly on the isotopic composition of the projectile. An effective source temperature of T≈2-5 MeV, monotonically increasing with decreasing impact parameter, is deduced from the transverse momentum distributions. For the interpretation of the data, calculations with the statistical multifragmentation model were performed. The variety of excited projectile spectators assumed to decay statistically is represented by an ensemble of excited sources with parameters determined previously from the fragment production observed in the same experiments. The obtained agreement is very satisfactory for more peripheral collisions where, according to the model, neutrons are mainly emitted during the secondary decays of excited fragments. The neutron multiplicity in more central collisions is underestimated, indicating that other sources besides the modeled statistical breakup contribute to the observed neutron yield. The choice made for the symmetry-term coefficient of the liquid-drop description of produced fragments has a weak effect on the predicted neutron multiplicities.
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Brzychczyk, J.Jagiellonian University in Kraków, Poland
(author)
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Buyukcizmeci, N.Selçuk Üniversitesi,Selçuk University
(author)
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Johansson, Håkan T,1977Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)f96hajo
(author)
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Trautmann, W.Helmholtz Zentrum,Helmholtz Center
(author)
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Wieloch, A.Jagiellonian University in Kraków, Poland
(author)
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Adrich, P.
(author)
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Aumann, T.Helmholtz Zentrum,Helmholtz Center
(author)
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Barczyk, T.Jagiellonian University in Kraków, Poland
(author)
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Bianchin, S.Helmholtz Zentrum,Helmholtz Center
(author)
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Boretzky, K.Helmholtz Zentrum,Helmholtz Center
(author)
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Botvina, AlexanderJohann Wolfgang Goethe Universität Frankfurt am Main,Goethe University Frankfurt
(author)
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Chbihi, A.Grand Accélérateur National d'Ions Lourds (GANIL)
(author)
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Cibor, J.Polish Academy of Sciences
(author)
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Czech, B.Polish Academy of Sciences
(author)
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Emling, H.Helmholtz Zentrum,Helmholtz Center
(author)
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Frankland, J. D.Grand Accélérateur National d'Ions Lourds (GANIL)
(author)
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Heil, M.Helmholtz Zentrum,Helmholtz Center
(author)
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Le Fèvre, A.Helmholtz Zentrum,Helmholtz Center
(author)
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Leifels, Y.Helmholtz Zentrum,Helmholtz Center
(author)
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Lühning, J.Helmholtz Zentrum,Helmholtz Center
(author)
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Łukasik, J.Polish Academy of Sciences,Helmholtz Zentrum,Helmholtz Center
(author)
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Lynen, U.Helmholtz Zentrum,Helmholtz Center
(author)
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Majka, Z.Jagiellonian University in Kraków, Poland
(author)
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Mishustin, I. N.Frankfurt Institute for Advanced Studies
(author)
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Müller, W. F.J.Helmholtz Zentrum,Helmholtz Center
(author)
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Ogul, R.Selçuk Üniversitesi,Selçuk University
(author)
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Orth, H.Helmholtz Zentrum,Helmholtz Center
(author)
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Palit, R.Helmholtz Zentrum,Helmholtz Center
(author)
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Rossi, D.Helmholtz Zentrum,Helmholtz Center
(author)
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Schwarz, C.Helmholtz Zentrum,Helmholtz Center
(author)
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Sfienti, C.Johannes Gutenberg-Universität Mainz,Johannes Gutenberg University Mainz
(author)
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Simon, H.Helmholtz Zentrum,Helmholtz Center
(author)
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Summerer, K.Helmholtz Zentrum,Helmholtz Center
(author)
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Weick, H.Helmholtz Zentrum,Helmholtz Center
(author)
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Zwiegliński, B.
(author)
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Jagiellonian University in Kraków, PolandPolish Academy of Sciences
(creator_code:org_t)
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In:Physical Review C108:42469-99932469-9985
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Pawłowski, P.
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Brzychczyk, J.
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Buyukcizmeci, N.
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Johansson, Håkan ...
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Trautmann, W.
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Wieloch, A.
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Adrich, P.
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Aumann, T.
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Barczyk, T.
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Bianchin, S.
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Boretzky, K.
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Botvina, Alexand ...
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Chbihi, A.
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Cibor, J.
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Czech, B.
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Emling, H.
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Frankland, J. D.
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Heil, M.
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Le Fèvre, A.
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Leifels, Y.
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Lühning, J.
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Łukasik, J.
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Lynen, U.
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Majka, Z.
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Mishustin, I. N.
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Müller, W. F.J.
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Ogul, R.
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Orth, H.
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Palit, R.
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Rossi, D.
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Schwarz, C.
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Sfienti, C.
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Simon, H.
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Summerer, K.
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Weick, H.
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Zwiegliński, B.
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