Thursday, June 20, 2013

1306.4586 (A. R. Balabekyan et al.)

Target Residues Formed in the Deuteron-Induced Reaction of Gold at
Incident Energy 2.2 AGeV

A. R. Balabekyan, N. A. Demekhina, G. S. Karapetyan, D. R. Drnoyan, V. I. Zhemenik, J. Adam, L. Zavorka, A. A. Solnyshkin, V. M. Tsoupko-Sitnikov, J. Khushvaktov
Cross sections of radioactive nuclides, resulting from the interactions of 4.4-GeV deuterons with $^{197}$Au, which cover all mass range of the reaction products, have been measured for the first time in the literature, up to our knowledge. The measurements were done by direct counting of the target with calibrated Ge(Li) $\gamma$-ray spectrometer and spectral analysis with computer program. More than 60 nuclides were identified between mass numbers 22 and 199. The results have been parametrized in term of 3-parameter equation which accurately reproduces the measured isobaric distribution. Using data from charge distribution mass-yield distribution was obtained. From mass distribution the evidence supportive of the existence of several different mechanisms in the reaction was derived. The comparison of the results of this work with the data from the reactions of high energy protons, deuterons and heavy-ions has been done in order to check the concepts of factorization and limiting fragmentation. The results are compared to the predictions of intranuclear cascade-evaporation calculations, and are in reasonable agreement.
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