D(t,. cap alpha. )n reaction cross sections at low energy
Because of discrepancies in previous measurements of the D(t,..cap alpha..)n reactions at low energies, we have developed a low-energy fusion cross-section facility (LEFCS) to remeasure the D(t,..cap alpha..) and other few-nucleon reactions. The experimental equipment features a windowless cryogenic target, a precision beam-intensity calorimenter, a 10 to 120 keV accelerator producing negative tritium ions, an accurate target gas flow and temperature system, and a tritium gas-handling system. The target density and geometry are calibrated with the D(p,p)D reaction using 10-MeV protons from the Los Alamos Van-de-Graaff. Presented are 16 D(t,..cap alpha..)n total cross sections from 8.3 to 78.1 keV equivalent deuteron energy. The relative error is 0.5% and the absolute error is 1.4% for most energies. For the lowest energy both uncertainties rise to about 4.7%. We will also attempt to measure the D(t,..gamma..)/sup 5/He cross section. We have made preliminary background studies with the LEFCS target and a bismuth germanate counter with encouraging results.
- Research Organization:
- Los Alamos National Lab., NM (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 6876826
- Report Number(s):
- LA-UR-82-2586; CONF-820942-9; ON: DE83000329
- Country of Publication:
- United States
- Language:
- English
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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA PARTICLES
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DEUTERIUM
DEUTERIUM TARGET
EMISSION
HYDROGEN ISOTOPES
ISOTOPES
LIGHT NUCLEI
NEUTRON EMISSION
NUCLEAR REACTIONS
NUCLEI
NUCLEOSYNTHESIS
ODD-ODD NUCLEI
STABLE ISOTOPES
TARGETS
THERMONUCLEAR REACTIONS
TRITON REACTIONS
TRITONS