Record number :
1202818
Title of article :
Charged-particle evaporation and pre-equilibrium emission in 1.2 GeV proton-induced spallation reactions Original Research Article
Author/Authors :
C.-M Herbach، نويسنده , , D. Hilscher، نويسنده , , U. Jahnke، نويسنده , , V.G. Tishchenko، نويسنده , , J. Galin، نويسنده , , A. Letourneau، نويسنده , , A. Péghaire، نويسنده , , D. Filges، نويسنده , , F. Goldenbaum، نويسنده , , Robert L. Pienkowski، نويسنده , , W.U. Schr?der، نويسنده , , J. T?ke، نويسنده ,
Issue Information :
هفته نامه با شماره پیاپی سال 2006
Pages :
38
From page :
426
To page :
463
Abstract :
Absolute cross sections, energy spectra, and angular distributions have been measured for 1,2,3H, 3,4,6He, 6,7,8,9Li and 7,9,10Be isotopes produced in 1.2 GeV proton-induced spallation reactions with targets between Al and Th. Results of simulation calculations with the intra-nuclear cascade code INCL2.0 coupled to the statistical model GEMINI are in good agreement with these data, as to charged-particle evaporation, mean excitation energy, and mean linear momentum transfer. The pre-equilibrium emission of composite particles, not accounted for in these simulations, however, typically contributes to the total production of composite particles by 40–60% for 2H and 3He, 20–40% for 3H, 5–20% for 4He, and about 15–25% for Li and Be. The composite pre-equilibrium particles together carry off a mean energy of up to 50 MeV, i.e., about 30% compared to the mean energy released by particle evaporation. For deuterons, pre-equilibrium emission is shown to be well described by surface coalescence while definitely other mechanisms are required for 4He and heavier clusters.
Keywords :
Al , ? , ?Fe , ?) , ?Ti , ?(E , ?Ni , deduced role of pre-equilibrium emission , ?Cu , Intra-nuclear cascade and statistical evaporation model analysis , ?Zr , ?Ag , ?Ta , ?W , ?Au , ?Pb , ?Th(p , ?X) , Nuclear reactions , measured light charged particles isotopic production , E=1.2 GeV , ?Ho
Journal title :
Nuclear physics A
Serial Year :
2006
Link To Document :
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