English
Related papers

Related papers: Improved Thermometer from Intermediate Mass Fragme…

200 papers

This work focuses on the study of temperature associated with the final heavy fragments in reactions induced by both the neutron-proton symmetric and the neutron-rich projectiles, and with incident energy ranges from 60$A$ MeV to 1$A$ GeV.…

Nuclear Theory · Physics 2012-12-04 C. W. Ma , J. Pu , Y. G. Ma , R. Wada , S. S. Wang

An isobaric yield ratio difference (IBD) method is proposed to study the ratio of the difference between the chemical potential of neutron and proton to temperature ($\Delta\mu/T$) in heavy-ion collisions. The $\Delta\mu/T$ determined by…

Nuclear Experiment · Physics 2013-11-06 Chun-Wang Ma , Shan-Shan Wang , Yan-Li Zhang , Hui-Ling Wei

The relative isobaric yields of fragments produced in a series of heavy ion induced multifragmentation reactions have been analyzed in the framework of a Modified Fisher Model, primarily to determine the ratio of the symmetry energy…

\item[Background] The isobaric yield ratio difference (IBD) method is found to be sensitive to the density difference of neutron-rich nucleus induced reaction around the Fermi energy. \item[Purpose] An investigation is performed to study…

Nuclear Experiment · Physics 2015-12-04 C. Y. Qiao , H. L. Wei , C. W. Ma , Y. L. Zhang , S. S. Wang

A statistical multifragmentation model (SMM) is applied to the experimentally observed multifragmentation events in an intermediate heavy ion reaction.Using the temperature and symmetry energy extracted from the isobaric yield ratio (IYR)…

Nuclear Experiment · Physics 2018-05-30 W. Lin , H. Zheng , P. Ren , X. Liu , M. Huang , R. Wada , Z. Chen , J. Wang , G. Q. Xiao , G. Qu

The isoscaling and isobaric ratio difference (IBD) methods are used to study the $\Delta\mu/T$ ($\Delta\mu$ being the difference between the chemical potentials of neutron and proton, and $T$ being the temperature) in the measured 1$A$ GeV…

Nuclear Experiment · Physics 2013-11-11 Chun-Wang Ma , Shan-Shan Wang , Yan-Li Zhang , Hui-Ling Wei

The isomeric yield ratio (IYR) of fission products is an observable that carries relevant information about the fragments emerging from the scission of a fissioning nucleus. We report on IYR of $^{96,98,100}$Y and $^{100,102}$Nb, together…

The isobaric yield ratios of the fragments produced in the neutron-rich 48Ca and 64Ni projectile fragmentation are analyzed in the framework of a modified Fisher model. The correlations between the isobaric yield ratios (R) and the energy…

Nuclear Theory · Physics 2011-08-03 Chun-Wang Ma , Fang Wang , Yu-Gang Ma , Chan Jin

The ratio of pairing-energy coefficient to temperature ($a_{p}/T$) of neutron-rich fragments produced in spallation reactions has been investigated by adopting an isobaric yield ratio method deduced in the framework of a modified Fisher…

Nuclear Theory · Physics 2018-03-14 Fei Niu , Chun-Wang Ma

For central collisions of $^{40}$Ca $+ ^{40}$Ca at 35 MeV/nucleon, the density and temperature of a fragmenting source have been evaluated in a self-consistent manner using the ratio of the symmetry energy coefficient relative to the…

Nuclear Theory · Physics 2014-10-15 X. Liu , W. Lin , R. Wada , M. Huang , Z. Chen , G. Q. Xiao , S. Zhang , X. Jin , J. Liu , F. Shi , P. Ren , H. Zheng , J. B. Natowitz , A. Bonasera

Isotope yields have been analyzed within the framework of a Modified Fisher Model to study the power law yield distribution of isotopes in the multifragmentation regime. Using the ratio of the mass dependent symmetry energy coefficient…

The measurement and interpretation of isotopic yield ratios in heavy ion reactions at intermediate and high energies are discussed and the usefulness of these observables for establishing equilibrium properties and for determining…

Nuclear Experiment · Physics 2007-05-23 J. Pochodzalla , W. Trautmann

The ratio of the symmetry energy coefficient to temperature, $a_sym/T$, in Fermi energy heavy ion collisions, has been experimentally extracted as a function of the fragment atomic number using isoscaling parameters and the variance of the…

Nuclear Experiment · Physics 2014-11-20 Z. Chen , S. Kowalski , M. Huang , R. Wada , T. Keutgen , K. Hagel , J. Wang , L. Qin , J. B. Natowitz , T. Materna , P. K. Sahu , A. Bonasera

The isobaric yield ratio difference (IBD) between two reactions of similar experimental setups is found to be sensitive to nuclear density differences between projectiles. In this article, the IBD probe is used to study the density…

Nuclear Theory · Physics 2014-09-10 Chun-Wang Ma , Xiao-Man Bai , Jiao Yu , Hui-Ling Wei

A systematic study of the effect of fragment$-$fragment interaction, quantum statistics, $\gamma$-feeding and collective flow is made in the extraction of the nuclear temperature from the double ratio of the isotopic yields in the…

Nuclear Theory · Physics 2009-10-31 B. K. Agrawal , S. K. Samaddar , Tapas Sil , J. N. De

The yields for hadrons and even light nuclei measured at midrapidity in relativistic heavy ion collisions are found to be dictated exclusively by their thermal Boltzmann factor for a common temperature of approximately 155 MeV. The reason…

Nuclear Theory · Physics 2018-01-18 Berndt Müller , Andreas Schäfer

We review the potential of precise measurements of electromagnetic probes in relativistic heavy-ion collisions for the theoretical understanding of strongly interacting matter. The penetrating nature of photons and dileptons implies that…

High Energy Physics - Phenomenology · Physics 2016-08-23 R. Rapp , H. van Hees

We simulate the central reactions of nearly symmetric, and asymmetric systems, for the energies at which the maximum production of IMFs occurs (E$_{c.m.}^{peak}$).This study is carried out by using hard EOS along with cugnon cross section…

Nuclear Theory · Physics 2011-02-23 Sukhjit Kaur , Aman D. Sood , Rajeev K. Puri

By relating the charge multiplicity distribution and the temperature of a de-exciting nucleus through a deep neural network, we propose that the charge multiplicity distribution can be used as a thermometer of heavy-ion collisions. Based on…

Nuclear Theory · Physics 2021-01-27 Y. D. Song , R. Wang , Y. G. Ma , X. G. Deng , H. L. Liu

Thermal models have been used to successfully describe the hadron yields from heavy ion collisions at a variety of energies. For root(S)<17 GeV this has usually been done using yields integrated over 4pi but at the higher energies available…

Nuclear Experiment · Physics 2007-05-23 Laura A. Stiles , Michael Murray
‹ Prev 1 2 3 10 Next ›