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EMISSION OF $sup 8$Li, $sup 9$Li AND $sup 8$B FRAGMENTS FROM STARS PRODUCED BY 4.3 GEV $pi$$sup -$-MESONS IN NUCLEAR EMULSION

Journal Article · · J. Phys. Soc. Japan
DOI:https://doi.org/10.1143/JPSJ.15.1753· OSTI ID:4120190
; ;
Nine thousand and three hundred stars with more than 5 black prongs were examined to study Li/sup 8/, Li/sup 9/, and B/sup 8/ fragments emitted from these stars. Thus 90 examples of hammer traoks produced by Li/sup 8/ and B/sup 8/ fragments, 11 examples of tracks produced by Li/sup 9/ yields Be/sup 9/ + e/sup -/ yields He/sup 4/ + He/sup 4/+ n + e/sup -/ and one example produced by Li/ sup 9/ yields Be/sup 9/ + e/sup -/ yields He/sup 5/ He/sup 4/ + e/sup -/ were obtained. The experimental result of angular distribution, energy distribution, and frequency of emission of these fragments is given. Comparison is made between the experimental result and the prediction of evaporation theory on the frequency of emission of these fragments. The effect of the B/sup 8/ fragments on the estimation of the Coulomb barrier of the residual nucleus for Li/sup 8/ fragment is discussed. (auth)
Research Organization:
Yamanashi Univ., Kofu, Japan
Sponsoring Organization:
USDOE
NSA Number:
NSA-15-002184
OSTI ID:
4120190
Journal Information:
J. Phys. Soc. Japan, Journal Name: J. Phys. Soc. Japan Vol. Vol: 15
Country of Publication:
Country unknown/Code not available
Language:
English

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Related Subjects

ANGULAR DISTRIBUTION
BORON 8
ENERGY
HELIUM 4
HELIUM 5
LITHIUM 8
LITHIUM 9
MESONS
NUCLEAR EMULSIONS
NUCLEAR REACTIONS
PARTICLE TRACKS
PHYSICS
STARS