Scopus
YÖKSİS Eşleşti
Neutrons from projectile fragmentation at 600 MeV/nucleon
Physical Review C · Ekim 2023
YÖKSİS Kayıtları
Neutrons from projectile fragmentation at 600 MeV/nucleon
PHYSICAL REVIEW C · 2023 SCI-Expanded
PROFESÖR NİHAL BÜYÜKÇİZMECİ →
Makale Bilgileri
DergiPhysical Review C
Yayın TarihiEkim 2023
Cilt / Sayfa108
Scopus ID2-s2.0-85175425178
Özet
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.
Yazarlar (36)
1
P. Pawłowski
2
J. Brzychczyk
3
Nihal Buyukcizmeci
4
H. Johansson
5
W. Trautmann
ORCID: 0009-0004-4337-6312
6
A. Wieloch
7
P. Adrich
8
T. Aumann
9
T. Barczyk
10
S. Bianchin
11
K. Boretzky
ORCID: 0000-0001-6471-5222
12
A. S. Botvina
13
A. Chbihi
14
J. Cibor
15
B. Czech
16
H. Emling
17
J. D. Frankland
18
M. Heil
19
A. Le Fèvre
20
Y. Leifels
21
J. Lühning
22
J. Łukasik
ORCID: 0000-0001-7169-399X
23
U. Lynen
24
Z. Majka
25
I. N. Mishustin
26
W. F.J. Müller
27
R. Ogul
28
H. Orth
29
R. Palit
30
D. Rossi
31
C. Schwarz
32
C. Sfienti
33
H. Simon
34
K. Sümmerer
35
H. Weick
36
B. Zwiegliński
Kurumlar
Chalmers University of Technology
Gothenburg Sweden
Frankfurt Institute for Advanced Studies
Frankfurt am Main Germany
GANIL Grand Accelerateur National d'Ions Lourds
Caen France
Goethe-Universität Frankfurt am Main
Frankfurt am Main Germany
GSI Helmholtz Centre for Heavy Ion Research GmbH
Darmstadt Germany
Helmholtz Research Academy Hesse for FAIR
Frankfurt am Main Germany
Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
Krakow Poland
Johannes Gutenberg-Universität Mainz
Mainz Germany
National Centre for Nuclear Research (NCBJ)
Warsaw Poland
Selçuk Üniversitesi
Selçuklu Turkey
Uniwersytet Jagielloński
Krakow Poland