Limiting Fragmentation for Helium (Z=2) Projectile Fragments Produced by Relativistic Heavy Ions in Nuclear Emulsion = 원자핵건판에서 상대론적 중이온에 의해 발생되는 헬륨(Z=2)에 대한 극한성 파쇄

다국어 초록 (Multilingual Abstract)

The angular distributions of emission angle θ of helium (Z=2) produced in the collisions of incident particles of 1.88 A GeV^56Fe, 14.6 A GeV ^28Si, and 60 and 200 A GeV ^16O in nuclear emulsion is well expressed by dN=exp[a+χexp(γ_α-η_b)]d[exp(γ_α-η_b)] where the pseudorapidity is γ=-ln[tan(θ/2)] and the laboratory system primary rapidity is η_b The consistency of the weighted mean value, χ=-0.052±0.002 for four data sets and the identical shape of their frequency of occurrence distributions in terms of exp(γ-η_b) attest to the validity of the concept of "limiting fragmentation" for helium projectile fragments produced in the projectile fragmentation regions of heavy ion collisions in nuclear emulsion in the entire primary energy range 1.88-200A GeV.