Browsing by Author "N.Y. Herrstrom"

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Search for anomalous interaction mean free paths of charge, 2≦Z≦18 projectile fragments in emulsions exposed to 1.8 A GeV40Ar ions
(Springer-Verlag, 1987) S.B. Beri; K.B. Bhalla; R. Bhanja; A. Bharti; V.S. Bhatia; G. Claesson; S. Garpman; S.K. Gupta; V.K. Gupta; N.Y. Herrstrom; B. Jakobsson; R. Joseph; G.L. Kaul; G. Kaur; M. Kaur; S. Kitroo; V. Kumar; S. Lokanathan; I. Lund; L.K. Mangotra; I.S. Mitra; S. Mookerjee; B. Norén; A. Oskarsson; I. Otterlund; Y. Prakash; S. Persson; N.K. Rao; S. Sankhyadhar; S. Satti; M.M. Sherif; K. Söderström; S.K. Tuli
40Ar-emulsion interactions are studied, to investigate the question of anomalons, in two G- 5 emulsion stacks. In about 4600 primary interactions, projectile fragments of Z≧2 for all generations have been followed until they interact or leave the stack. After careful estimation of charges of these fragments, variation of their mean free paths is studied as a function of distance from the preceding interaction. Generation effect, Nh dependence and production angle effect are investigated. In addition multi-chain events are analysed separately. Our results do not show anomalons at the 6% level and are consistent with non-occurrence of anomalons. However, this experiment is not sensitive enough to rule out anomalons (with a mfp of the order of 2 to 3 cm) produced at about 1% (or less) level. © 1987 Springer-Verlag.