Low-energy nuclear reactions with hydrogen isotopes

Conference · Sun Jan 01 04:00:00 EST 1984

DOI:https://doi.org/10.1016/0168-583X(85)90279-4· OSTI ID:6332135

Jarmie, N; Brown, R E

Using the Los Alamos Low-Energy Fusion Cross-Section Facility (LEFCS), we have completed the study of the D(t,..cap alpha..)n reaction from E/sub t/ = 12.5 to 117 keV, and now have measured angular distributions of the reactions D(d,p)T and D(d,/sup 3/He)n from E/sub d/ = 20 to 117 keV. The experimental equipment features a windowless cryogenic target, a precision beam-intensity calorimeter, a 10- to 120-keV accelerator producing negative tritium ins, an accurate target gas-flow and temperature system, and a tritium gas-handling system. Most of the quite anisotropic angular distributions of the D + D reactions have relative errors of about 1% and the integrated cross sections have absolut errors of about 1.5%. Astrophysical S functions extracted from the data and also from a least-squares fit of a + b cos/sup 2/theta to the data show a curious behavior with energy. The cross sections, which agree with previous but less accurate data, are compared with R-Matrix calculations. We also show preliminary results for alpha-particle spectra of the T(t,..cap alpha..)nn reaction. A feature of this experiment is the flow through our windowless target of 1.5 standard liters of tritium gas per day.

• Research Organization: Los Alamos National Lab., NM (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6332135
• Report Number(s): LA-UR-84-3349; CONF-841117-15; ON: DE85002388
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700205* -- Fusion Power Plant Technology-- Fuel
Heating
& Injection Systems
ALPHA SPECTRA
ANGULAR DISTRIBUTION
ANIONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CALORIMETERS
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DATA
DEUTERIUM
DEUTERON REACTIONS
DISTRIBUTION
ENERGY RANGE
EXPERIMENTAL DATA
HYDROGEN ISOTOPES
INFORMATION
IONS
ISOTOPES
KEV RANGE
KEV RANGE 10-100
LIGHT NUCLEI
MEASURING INSTRUMENTS
NUCLEAR REACTIONS
NUCLEI
NUCLEOSYNTHESIS
NUMERICAL DATA
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
RADIOISOTOPES
SPECTRA
STABLE ISOTOPES
SYNTHESIS
THERMONUCLEAR REACTIONS
TRITIUM
TRITON REACTIONS
YEARS LIVING RADIOISOTOPES