Published February 1991 | Version v1
Journal article Metadata-only

11B+α reaction rates and primordial nucleosynthesis

Creators

  • 1. W. K. Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125 (USA)

Description

Total cross sections and resonance yields have been measured for the 11B(α,n)14N reaction for Eα=350--2400 keV, and for the 14C(p,n)14N reaction for Ep=1000--1550 keV, using 4π neutron detectors. Differential cross sections for the 11B(α,p)14C reaction were measured for Eα=600--1820 keV. A strong and narrow (Γ=2.2 eV) new resonance was found at Eα=606 keV, with Jπ=7/2- established by (α,γ) and (α,p) angular distributions. This resonance dominates the thermonuclear (α,n) and (α,p) reaction rates for T∼0.5x109 K. The 11B(α,n), (α,p), and (α,γ) reaction rates versus temperature are presented and compared with 11B(n,γ) rates

Additional details

Publishing Information

Journal Title
Physical Review, C
Journal Volume
43
Journal Issue
2
Series
Phys. Rev., C.
Journal Page Range
883-896
ISSN
0556-2813
CODEN
PRVCA

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
22054160
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Descriptors DEI
ALPHA REACTIONS; BORON 11 TARGET; CARBON 14; DIFFERENTIAL CROSS SECTIONS; KEV RANGE 100-1000; MEV RANGE 01-10; NEUTRONS; NITROGEN 14; NUCLEOSYNTHESIS; PROTONS; THERMONUCLEAR REACTIONS; TOTAL CROSS SECTIONS
Descriptors DEC
BARYONS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CARBON ISOTOPES; CATIONS; CHARGED PARTICLES; CROSS SECTIONS; ELEMENTARY PARTICLES; ENERGY RANGE; EVEN-EVEN NUCLEI; FERMIONS; HADRONS; HYDROGEN IONS; HYDROGEN IONS 1 PLUS; IONS; ISOTOPES; KEV RANGE; LIGHT NUCLEI; MEV RANGE; NITROGEN ISOTOPES; NUCLEAR REACTIONS; NUCLEI; NUCLEONS; ODD-ODD NUCLEI; RADIOISOTOPES; STABLE ISOTOPES; SYNTHESIS; TARGETS; YEARS LIVING RADIOISOTOPES