Interactions of the heavy nuclei of the cosmic radiation

Fowler, P. H.; Hillier, R. R.; Waddington, C. J.

doi:10.1080/14786435708243819

Cited by 41 publications

(2 citation statements)

References 6 publications

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“…Investigations of the angular distribution of the helium particles emitted from the projectile in relativistic heavy ion interactions have been carried out by Fowler et aL [2] and Cester et al [3]. Their measurements show that the mean energy of the helium particles in the centre of mass system of the excited nucleus is considerably larger than that expected from the evaporation theory, and that the mean laboratory angle of emission increases with increasing primary charge.…”

Section: Introductionmentioning

confidence: 97%

Emission of helium nuclei in heavy ion interactions at energies ≧ 100 MeV/nucleon

Kullberg

Otterlund

1973

Z. Physik

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The energy and angular distributions of helium particles emitted in interactions between nuclei in the cosmic radiation and nuclei in photoemulsions at energies _> 100 MeV/nucleon have been studied. The data obtained is impossible to interpret on the basis of a statistical decay of excited nuclei. For example, it is found that more than 28% of the helium nuclei are emitted in processes different from simple evaporation. The differential energy distribution of the helium nuclei in the energy interval (40-200) MeV can be represented by the relation N(E)dE=constE-adE, where a~, 1.2.The large spread in angles and energies of the fast helium particles emitted in heavy ion interactions can to a certain degree be understood, if it is assumed that interactions between nucleons and clusters of nucleons occur.

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Section: Introductionmentioning

confidence: 97%

Emission of helium nuclei in heavy ion interactions at energies ≧ 100 MeV/nucleon

Kullberg

Otterlund

1973

Z. Physik

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“…The distributions of the transverse momenta (p t ) of the helium fragments of nuclear projectiles produced by the interactions of high energy nuclei with target nuclei have been studied in nucleus-nucleus collisions, originally in cosmic ray experiments [1]. More recently, the p t distributions were studied using heavy ion beams when they became available at accelerators.…”

Section: Introductionmentioning

confidence: 99%

Transverse momenta of helium fragments in gold fragmentation at 10.6 GeV/nucleon

Cherry

Dąbrowska²,

Deines‐Jones

et al. 1997

Zeitschrift f�r Physik C Particles and Fields

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The transverse momentum (p t ) distributions of helium fragments from gold fragmentation on different nuclei of nuclear emulsion have been measured and a clear increase of average p t with target mass is seen. The p t distributions can be parameterized by a sum of three exponential functions of the form ∼ exp(−p 2 t /B i ). The differences in p t distributions in interactions on different targets can be explained by different contributions of the three exponential functions. These contributions depend on the projectile breakup in the collision, and for a given degree of the projectile breakup do not depend on the target mass.

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