SYSTEMATIC COMPARISON OF THE EXPERIMENTAL DATA WITH THE FRITIOF MODEL IN NUCLEUS–NUCLEUS INTERACTIONS WITH LIGHT AND HEAVY TARGET NUCLEI IN NUCLEAR EMULSION AT 4.5A Gev/c

2002 ◽  
Vol 11 (02) ◽  
pp. 161-175 ◽  
Author(s):  
M. MOHERY ◽  
N. N. ABD-ALLAH
Keyword(s):  
Experimental Data ◽  
Nuclear Emulsion ◽  
Multiplicity Distribution ◽  
Angular Distributions ◽  
Target Groups ◽  
Systematic Comparison ◽  
Secondary Particles ◽  
Heavy Target ◽  
Light Target ◽  
Fritiof Model

The characteristics of the interactions of 4.5 A GeV/c 28 Si nuclei with emulsion have been investigated. The method of separating interactions into those with hydrogen, light and heavy target nuclei has been discussed. The multiplicity distribution, average multiplicities, multiplicity correlation and the angular distributions of the secondary particles emitted in 28 Si -emulsion are calculated according to the Modified Fritiof Model and compared with the experimental data and with other available data for p, 12 C , 24 Mg at the same energy. It has been found that the modified Fritiof model can describe the multiplicity characteristics of the different emitted particles in the above-mentioned interaction with different target groups. The comparison of the experimental data with the modified Fritiof model shows no clear preference for the case of the light target while it seems to be nearer to the experimental data in the case of the heavy target and the emulsion

scholarly journals Study of Angular Distribution and KNO Scaling in the Collisions of 28Si with Emulsion Nuclei at 14.6A GeV

2021 ◽  
Vol 57 (12) ◽  
pp. 1205
Author(s):  
M. Ayaz Ahmad ◽  
Shafiq Ahmad
Keyword(s):  
Experimental Data ◽  
Angular Distribution ◽  
Nuclear Emulsion ◽  
Multiplicity Distribution ◽  
Heavy Ion ◽  
High Energy ◽  
Universal Function ◽  
Heavy Ion Collision ◽  
Present Experimental Data ◽  
Ion Collision

An attempt has been made to study the angular characteristics of heavy ion collision at high energy in the interactions of 28Si nuclei using with nuclear emulsion. The KNO scaling behavior in terms of the multiplicity distribution has been studied. A simplest universal function has been used to represent the present experimental data.

scholarly journals Shower and Slow Particle Productions in Nucleus-Nucleus Collisions at High Energy

2014 ◽  
Vol 2014 ◽  
pp. 1-12 ◽  
Author(s):  
S. Fakhraddin ◽  
Magda A. Rahim ◽  
Hamdy M. M. Zayd
Keyword(s):  
Experimental Data ◽  
Thermal Model ◽  
Theoretical Calculations ◽  
High Energy ◽  
Experimental Results ◽  
Angular Distributions ◽  
Target Groups ◽  
Slow Particle ◽  
Multiplicity Distributions

The multiplicity distributions of shower, grey, and black particles produced in interactions of4He,12C,16O,22Ne, and28Si with emulsion (Em) at 4.1–4.5 A GeV/c beam energies, and their dependence on target groups (H, CNO, and AgBr) is presented and has been reproduced by multisource thermal model. The multiplicity and the angular distributions of the three types of particles have been investigated. The experimental results are compared with the corresponding ones from the model. We found that the experimental data agrees with theoretical calculations using multisource thermal model.

SOME CHARACTERISTICS OF 6Li AND 7Li ISOTOPES INTERACTIONS WITH EMULSION NUCLEI AT 3.7–4.5 AGeV/c

2004 ◽  
Vol 13 (03) ◽  
pp. 619-630 ◽  
Author(s):  
M. EL-NADI ◽  
V. V. UZHINSKII ◽  
M. M. SHERIF ◽  
A. ABD-ELSALAM ◽  
M. S. EL-NAGDY ◽  
...  
Keyword(s):  
Experimental Data ◽  
Nuclear Emulsion ◽  
Systematic Comparison

Experimental data are presented on the multiplicities of the charged secondaries of the various types in the interactions of 6 Li and 7 Li projectile isotopes with the target nuclei in nuclear emulsion at 4.5 A GeV / c and 3.7 A GeV / c , respectively. A systematic comparison using the corresponding values of 4 He – Em interactions is made. The results are discussed in the frameworks of the cascade evaporation, "wounded" nucleons, and generalized Andersson–Otterlund–Stenlund (AOS) models.

INTERACTIONS OF RELATIVISTIC 24Mg NUCLEI WITH EMULSION NUCLEI AT 4.5 GeV/c PER NUCLEON

1995 ◽  
Vol 04 (04) ◽  
pp. 815-825 ◽  
Author(s):  
M.A. JILANY ◽  
N.N. ABD ALLAH ◽  
A. ABD-ELDAIM
Keyword(s):  
Cross Sections ◽  
Energy Region ◽  
Nuclear Emulsion ◽  
Multiplicity Distribution ◽  
Scaling Function ◽  
Nuclear Emulsions ◽  
Secondary Particles ◽  
Inelastic Interactions ◽  
Free Hydrogen ◽  
The Masses

Nuclear emulsions are used to investigate spallations produced by 108 GeV/c 24Mg nuclei. The main experimental characteristics (inelastic cross-sections and multiplicities of various types of secondary particles and their dependence on the masses of the colliding nuclei) in inelastic interactions of 24Mg nuclei with nuclei of nuclear emulsion at 4.5 GeV/c per nucleon have been studied. The integral multiplicity distribution of disintegrated particles from target nuclei is used to separate the inelastic interactions with the free hydrogen (H), the light (CNO), and the heavy (AgBr) nuclei. Multiplicity scaling in the shower particles obeys a scaling function of Koba-Neilsen-Olesen (KNO) type in this energy region.

Forward backward studies of 22Ne(28Si)-emulsion interactions at (4.1-4.5) AGeV/c

2006 ◽  
Vol 84 (10) ◽  
pp. 925-932 ◽  
Author(s):  
S S Abdel-Aziz
Keyword(s):  
Experimental Data ◽  
Nucleon Nucleon ◽  
Cascade Model ◽  
The Other ◽  
Incident Momentum ◽  
Process Comparison ◽  
Monte Carlo Techniques ◽  
Secondary Particles ◽  
High Energies ◽  
Fritiof Model

The characteristics of nucleus–nucleus collisions at high energies are investigated for the interaction of 22Ne and 28Si with emulsion nuclei . The multiplicity and correlations of the forward (θ < 90°) and backward (θ ≥ 90°) secondary particles emitted are calculated according to the modified cascade and modified Fritiof models. The predictions of the two models are compared with experimental data at an incident momentum of (4.1–4.5) GeV/c per nucleon. Both models depend on the Monte Carlo techniques where the modified cascade model implies the superposition of nucleon–nucleon interactions, and the modified Fritiof model utilizes the Regge theory for the description of the cascading process. Comparison with data shows no clear preference of one model over the other. However, the modified Fritiof model seems to be nearer to the experimental data than the modified cascade model.PACS No.: 13.85.–t

SOME CHARACTERISTICS OF THE COMPOUND MULTIPLICITY IN HIGH-ENERGY NUCLEUS–NUCLEUS INTERACTIONS

2011 ◽  
Vol 20 (08) ◽  
pp. 1735-1754 ◽  
Author(s):  
M. MOHERY ◽  
M. ARAFA
Keyword(s):  
Experimental Data ◽  
Impact Parameter ◽  
Mass Number ◽  
Multiplicity Distribution ◽  
High Energy ◽  
Projectile Nucleus ◽  
Target Mass ◽  
Compound Multiplicity ◽  
Multiplicity Distributions ◽  
The Impact

The present paper deals with the interactions of 22 Ne and 28 Si nuclei at (4.1–4.5)A GeV /c with emulsion. Some characteristics of the compound multiplicity nc given by the sum of the number of shower particles ns and grey particles ng have been investigated. The present experimental data are compared with the corresponding ones calculated according to modified cascade evaporation model (MCEM). The results reveal that the compound multiplicity distributions for these two reactions are consistent with the corresponding ones of MCEM data. It can also be seen that the peak of these distributions shifts towards a higher value of nc with increasing projectile mass. It may further be seen that the compound multiplicity distributions becomes broader with increasing target size and its width increases with the size of the projectile nucleus. In addition, it has been found that the MCEM can describe the compound multiplicity characteristics of the different projectile, target and the correlation between different emitted particles. The values of average compound multiplicity increase with increasing mass of the projectile. Furthermore, it is observed that while the value of 〈nc〉 depends on the mass number of the projectile Ap and the target mass number At, the value of the ratio 〈nc〉/D(nc) seems to be independent of Ap and At. The impact parameter is found to affect the shape of the compound multiplicity distribution. Finally, the dependence of the average compound multiplicity on the numbers of grey and black particles, and the sum of them, is obvious. The values of the slope have been found to be independent of the projectile nucleus.

ALIGNMENT PHENOMENON IN GAMMA FAMILIES WITH ENERGIES 100–1000 TEV

2005 ◽  
Vol 20 (29) ◽  
pp. 7032-7034 ◽  
Author(s):  
T. S. YULDASHBAEV ◽  
KH. NURITDINOV
Keyword(s):  
Experimental Data ◽  
Energy Dependence ◽  
Energetic Particles ◽  
Emulsion Chamber ◽  
X Ray ◽  
Secondary Particles ◽  
String Models

According to Pamir X-ray Emulsion Chamber (XEC) experimental data at the energies E est > 2 × 1016 eV the fraction of events with four "aligned" most energetic particles increases sharply for families without leading secondary particles. That energy dependence is not described by Quark Gluon String Models.

Comparative analysis of the characteristics of charged pions in p12C and n12C collisions at 4.2GeV/c

2020 ◽  
Vol 29 (06) ◽  
pp. 2050042 ◽  
Author(s):  
Kosim Olimov ◽  
Kadyr G. Gulamov ◽  
Alisher K. Olimov ◽  
Sagdulla L. Lutpullaev ◽  
Gulmurod U. Khudaiberdyev ◽  
...  
Keyword(s):  
Experimental Data ◽  
Comparative Analysis ◽  
Kinematic Characteristics ◽  
Charged Pions ◽  
Fritiof Model

The new experimental data on various characteristics of the secondary charged pions produced in [Formula: see text]C collisions at 4.2[Formula: see text]GeV/c are presented. A comparative analysis of the average multiplicities and various kinematic characteristics of the charged pions produced in [Formula: see text]C and [Formula: see text]C collisions at 4.2[Formula: see text]GeV/c is made. The experimental data are compared systematically with the predictions of the modified FRITIOF model.

MULTIPLICITY DISTRIBUTIONS IN LIMITED PSEUDORAPIDITY INTERVALS

1986 ◽  
Vol 01 (01) ◽  
pp. 15-21 ◽  
Author(s):  
C.S. LAM ◽  
M.S. ZAHIR
Keyword(s):  
Experimental Data ◽  
Multiplicity Distribution ◽  
Number Of Clusters ◽  
Total Multiplicity ◽  
Multiplicity Distributions

We calculate the multiplicity distributions in fixed pseudorapidity intervals |η|≤ηc for [Formula: see text] collisions at [Formula: see text] GeV from the total multiplicity distribution. Agreement with experimental data is good where expected. This calculation may be regarded as giving a relation between the number of clusters lying inside |η|≤ηc and the partition temperature Tp(N) introduced by Chou, Yang and Yen for N produced particles.

scholarly journals A systematic comparison of buildingEXODUS predictions with experimental data from the Stapelfeldt trials and the Milburn House evacuation

2005 ◽  
Vol 29 (9) ◽  
pp. 818-851 ◽  
Author(s):  
S. Gwynne ◽  
E.R. Galea ◽  
M. Owen ◽  
P.J. Lawrence ◽  
L. Filippidis
Keyword(s):  
Experimental Data ◽  
Systematic Comparison
Sign in / Sign up

Export Citation Format

Share Document