Isotopic production cross section of fragments in56Fe+pand136Xe

Abstract

Using a unified description on multiplicity distributions of final-state particles, the spallation residues in 56 Fe + p reactions and fragmentation products in 136 Xe( 124 Xe) + Pb reactions at intermediate energy and at the low end of high energies are studied. The isotopic production cross sections of fragments produced in the reactions are calculated by using a multisource ideal gas model. Each source contributes multiplicity-like distribution of neutrons like a radioactive object.

Pseudorapidity distributions of charged particles inp−p̄orp−pcollisions at high energies and predictions at ultrahigh energies

“…In fact, the NSD and INEL collisions have a constant normalization of the cross section [9,12]. Following our recent investigation [13] and analysis of the experimental data with the multisource ideal gas model [14][15][16][17], we find the deviation between the two normalizations being less than 6%.…”

“…The participant-spectator picture is a base of nucleonnucleon and nucleus-nucleus collision theories and many other theoretical models, such as the LEXUS model [21], the nuclear fireball model [22,23], the QMD model [24][25][26][27], the Glauber model [28], the two-component model [29,30], the threshold model [31,32], the HSD model [33][34][35], the nuclear overlap model [36], the multisource ideal gas model [14][15][16][17], and so on. In the frameworks of multisource ideal gas model and nuclear geometry theory, each nucleus goes straight in collisions.…”

“…According to our recent investigation [13] finished in the framework of the multisource ideal gas model [14][15][16][17], the experimental data of particle pseudorapidity distributions in p-p or p-p collisions measured by the above five collaborations [8][9][10][11][12] are analyzed in this paper. We can give the variation law of different parameters from the investigation and predict the pseudorapidity distributions in p-p or p-p collisions at the higher LHC energies.…”

Initial and Final State Temperatures of Antiproton Emission Sources in High Energy Collisions

“…There are various models or functions being used in the analyses of p T spectra. For example, in the framework of multisource thermal model [6][7][8][9], we could get the mean transverse momentum p T of particles and the initial state temperature T i of emission source from fitting the p T spectra described by the Erlang distribution [7][8][9] which contains the sources number n s and the mean transverse momentum p t contributed by each source. Meanwhile, we could obtain the parameter values in the Hagedorn function [10,11] by using the same method, that is the method of fitting the p T spectra.…”

“…Several representative groups of transverse momentum spectra are selected to represent and summarize the changing laws of the initial and final state temperature and other parameter values. Finally, in section 4, we give our summary and conclusions 2 Formalism and method i) The Erlang distribution Firstly, we discuss uniformly hard and soft collision processes in the framework of the multisource thermal model [6][7][8][9]. According to the model, a given particle is produced in the collision process where a few partons have taken part in.…”