Target-Associated Particles Production in the Interactions of 3.7 and 200A GeV Sulphur Projectiles with Nuclear Emulsion

El‐Nadi, M.; Salam, A.; Hussein, A.; Shaat, E. A.; Ali-Mousa, N.; Abou-Mousa, Z.; Kamel, S.; Abdel-Waged, Khaled; El-Falaky, E.

doi:10.1142/s0218301397000135

Cited by 16 publications

(14 citation statements)

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“…Moreover, the probability of all target nuclei to emit alpha particles seems to be remarkably large compared to emitting other fragments. This experimental fact ensures that alphaparticle is a tightly bound structure and a strong possibility that nuclei might be considered as composed of alpha clusters, as supported by several research workers [23][24][25][26][27][28][29].…”

Section: -1 Charge Identificationmentioning

confidence: 95%

Interaction of 160-GeV muon with emulsion nuclei

Othman

El-Samman

Hussein

et al. 2018

Int. J. Mod. Phys. E

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In this work we present some results of the interaction of high energy muons with emulsion nuclei. The interaction results in emission of a number of fragments as a consequence of electromagnetic dissociation of the excited target nuclei. This excitation is attributed to absorption of photons by the target nuclei due to the intense electric field of the very fast incident muon particles. The interactions take place at impact parameters that allows ultra-peripheral collisions to take place, leading to giant resonances and hence multi-fragmentation of emulsion targets. Charge identification, range, energy spectra, angular distribution and topological cross-section of the produced fragments are measured and evaluated.

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Section: -1 Charge Identificationmentioning

confidence: 95%

Interaction of 160-GeV muon with emulsion nuclei

Othman

El-Samman

Hussein

et al. 2018

Int. J. Mod. Phys. E

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“…To obtain a high scanning efficiency, the pellicles were scanned under 100X magnification by doubly scanning along the beam tracks, fast in the forward direction and slow in the backward one. The details about the irradiation and scanning are reported in earlier studies [15,16]. Once an interaction is observed, the incoming track is carefully examined to ensure that it is indeed a beam track.…”

Section: Table (1): the Chemical Composition Of Br-2 Andmentioning

confidence: 99%

Correlations of Singly and Doubly Charged Projectile Fragments with Secondary Charged Particles Produced in 32S-Emulsion Interactions at 3.7A and 200A GeV

Bahr

Moniem

2018

Arab Journal of Nuclear Sciences and Applications

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The multiplicity correlations amongst the singly (N P) and doubly (N alpha) charged projectile fragments and the secondary charged target fragments (black, grey and shower tracks) produced in 32 S-Emulsion interactions at 3.7A and 200A GeV are studied. This aims at shedding some light on the interface of spectator and participant region. The effect of changing the energy used for 32 S-Emulsion interactions is investigated as well, indicating that the values of ˂ N P ˃ and ˂ N alpha ˃ at both incident energies have the same values within experimental errors. The impact centrality is shown to be increased with the increasing number of singly charged projectile fragments N P ,. The correlation between the mean multiplicities of secondary charged particles and both of the singly and doubly charged projectile fragments are observed. The relation between the variation of mean values of black and heavy ionized particles is observed and found to be independent of the production of singly charged fragments.

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“…Mesons are produced after a certain time when strings and resonances decay. Particles taking part in the primary collisions are allowed to rescatter with other particles by using Reggeon interactions [41][42][43], which basically amounts to a cascade in the two-dimensional impact parameter space. This is the main difference between Reggeon cascading and the usual cascading in the three-dimensional space of the nucleus.…”

Section: Fritiof Modelmentioning

confidence: 99%

Target size dependence of relativistic hadron emission from³²S nuclear collisions at 3.7 and 200AGeV

Abdelsalam¹,

Badawy²,

Hafiz³

2012

J. Phys. G: Nucl. Part. Phys.

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The behavior of the relativistic hadron (shower particle) multiplicity for 32 S-nucleus interactions is investigated. The experiment is carried out at 3.7A GeV (Dubna energy) and 200A GeV (SPS energy) to search for the incident energy effect on the interactions inside the different emulsion target nuclei. Data are presented in terms of the number of emitted relativistic hadrons in both forward and backward angular zones. The dependence on the target size is presented. For this purpose the statistical events are separated into groups according to the interactions with H, CNO, Em, and AgBr target nuclei. The separation of events, into these groups, is executed based on predictions of Glauber's multiple scattering theory. Features suggestive of a decay mechanism seem to be a characteristic of the backward emission of relativistic hadrons. The results strongly support the assumption that the relativistic hadrons may already be emitted during the de-excitation of the excited target nucleus, in a behavior like that of compound nucleus disintegration. Regarding the limiting fragmentation hypothesis beyond 1 GeV, the target size is the main parameter affecting the backward production of relativistic hadrons. The backward shower particle multiplicity can indicate the impact parameter. The incident energy is a principle factor responsible for the forward relativistic hadron production, implying that this system of particle production is a creation system. However, the target size is an effective parameter as well as the projectile size considering the geometrical concept seen in the nuclear fireball model. The forward shower particle multiplicity distributions may behave in a similar trend at Dubna energy and SPS for low target sizes. For heavy target sizes, the SPS energy reveals the creation of hadrons with nearly equal probabilities over a wide range of multiplicity, extending to more than 300 hadrons per event. The data are analyzed in the framework of the FRITIOF model.

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Target-Associated Particles Production in the Interactions of 3.7 and 200A GeV Sulphur Projectiles with Nuclear Emulsion

Cited by 16 publications

References 0 publications

Interaction of 160-GeV muon with emulsion nuclei

Interaction of 160-GeV muon with emulsion nuclei

Correlations of Singly and Doubly Charged Projectile Fragments with Secondary Charged Particles Produced in 32S-Emulsion Interactions at 3.7A and 200A GeV

Target size dependence of relativistic hadron emission from³²S nuclear collisions at 3.7 and 200AGeV

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Target-Associated Particles Production in the Interactions of 3.7 and 200A GeV Sulphur Projectiles with Nuclear Emulsion

Cited by 16 publications

References 0 publications

Interaction of 160-GeV muon with emulsion nuclei

Interaction of 160-GeV muon with emulsion nuclei

Correlations of Singly and Doubly Charged Projectile Fragments with Secondary Charged Particles Produced in 32S-Emulsion Interactions at 3.7A and 200A GeV

Target size dependence of relativistic hadron emission from32S nuclear collisions at 3.7 and 200AGeV

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Target size dependence of relativistic hadron emission from³²S nuclear collisions at 3.7 and 200AGeV