$sup 8$Li FRAGMENTS ASSOCIATED WITH NUCLEAR DISINTEGRATION

Journal Article · Mon Aug 01 04:00:00 EDT 1960 · Nuovo Cimento (Italy) Divided into Nuovo Cimento A and Nuovo Cimento B

OSTI ID:4120071

Alumkal, A; Barkow, A G; Kane, G; McDaniel, R E; O'Friel, Z

A preliminary report is presented on the emission of heavy fragments in nuclear disintegration. It is assumed that the probability of emission of a heavy fragment depends on the nuclear temperature (T) and the potential barrier (V) of the excited nucleus. It is the purpose of this investigation to study the dependence of the differential energy spectrum on the excitation energy. The data collected were from four stacks of Ilford G-5 emulsions, exposed to (a) a stopped pion beam, (b) 400-Mev proton beam, (c) 4 to 5-bev pion beam, and (d) cosmic rays with an exposure in Texas, magnetic latitude of 41 deg N, and on the Island of Guam at the magnetic equator. Emphasis is placed on the emission of Li/ sup 8/ as the heavy fragment. The results of the experiment indicate that for high excitation energy there is a collimation of lithium and beryllium fragments in the forward direction, which may be explained on the basis of evaporation theory by assuming the fragment emission to take place during the flight of a highly excited nucleus. In the case of low excitation energy, the angular distribution of Li/sup 8/ fragments is isotropic and the energy distribution indicates that the majority result from the absorption of a pi /sup -/-meson by a light nucleus. (auth)

• Research Organization: Marquette Univ., Milwaukee
• NSA Number: NSA-15-002206
• OSTI ID: 4120071
• Journal Information: Nuovo Cimento (Italy) Divided into Nuovo Cimento A and Nuovo Cimento B, Journal Name: Nuovo Cimento (Italy) Divided into Nuovo Cimento A and Nuovo Cimento B Vol. Vol: (10) 17; ISSN NUCIA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ABSORPTION
ANGULAR DISTRIBUTION
BEAMS
BERYLLIUM ISOTOPES
CHARGED PARTICLES
COSMIC RADIATION
EMISSION
ENERGY
EVAPORATION
EXCITATION
FISSION
LITHIUM 8
MESONS
NUCLEAR EMULSIONS
NUCLEI
PARTICLE TRACKS
PHYSICS
PROTON BEAMS