An anomalously short mean free path of 10.93 ±2.00 cm is found for secondary Z = 2 fragments of 4.5^4-GeV/c 12 C projectiles at distances D ^ 2.5 cm from their production in nuclear emulsions. The largest contribution to this anomalous short-mean-free-path component comes from N h = 0 interactions of 12 C in emulsion.
The inner Brernsstrahlung spectrum (I.B.) associated wih the non-unique second forbidden /%transition of 36C1 was measured using a single channel NaI (T1) scintillation spectrometer. After making all the necessary corrections, the experimental results were compared with the corresponding theoretical distributions due to the KUB, Lewis and Ford, Nilsson, Ford and Martin and Chang and Falkoff. Also a comparison with those calculated according to Nilsson theory after applying the shape correction factor (M. KUB) was done. The measured spectrum is found to show fairly good agreement with M. KUB theory and its found to deviate therafter from all five theories. PACS: 23.40. -s; 23.90. + w
The inner Bremsstrahlung (I.B.) spectrum accompanying the β-decay of 141Ce (non-unique first forbidden β-transition) was measured using a single channel scintillation spectrometer. The measured I.B. was analyzed by the variable width peeling-off method. This analyzed and corrected I.B. was compared with those calculated according to the original theories of Knipp and Uhlenbeck as well as of Bloch (KUB), the coulomb corrected theories of Lewis and Ford and of Nilsson, and according to detour-transition calculations of the Ford and Martin theory. Ths shape correction factor suggested by Konopinski and Uhlenbeck on the Fermi β-decay theory was applied to the calculated I.B. based on Nilsson's theory (modified KUB theory). The experimental results are in better agreement with the modified KUB theory than the other theories.
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