Cross sections and analyzing powers for (p,n) reactions on targets of /sup 16/O, /sup 18/O, /sup 9/Be and /sup 28/Si

Thesis/Dissertation · Fri Jan 01 04:00:00 EST 1982

OSTI ID:6144037

Fazely, A

Neutron energy spectra from proton-induced reactions on /sup 16/O, /sup 18/O, /sup 9/Be and /sup 28/Si nuclei were measured at the Indiana University Cyclotron Facility. Differential cross sections for eleven transitions were extracted for the /sup 16/O(p,n)/sup 16/F(J/sup ..pi../, E/sub x/) reactions at 99.1 and 135.2 MeV. Several new spin and parity assignments were obtained for states in /sup 16/F by analysis of the neutron angular distributions and by comparison of the excitation energy spectra with a shell-model calculation. Analyzing powers for four transitions were extracted for the /sup 16/O(vector p,n)/sup 16/F(J/sup ..pi../, E/xub x/) reactions at 134.0 MeV and were compared with Distorted-Wave Impulse-Approximation (DWIA) calculations. The shape of the analyzing power angular distribution for the transition to the 4 state at 6.37 MeV is described well. Cross sections and analyzing powers for five 1/sup +/, T = 0 and three 1/sup +/, T = 1 transitions were extracted for the /sup 18/O(p,n)/sup 18/F and /sup 18/O9vector p,n)/sup 18/F reactions at 135.2 and 133.5 MeV, respectively. The distribution of 1/sup +/ strength is 94.5% in the T = 0 component. Approximately 82% of the T = 0 component is contained in the ground-state transition. The total 1/sup +/ strength observed in /sup 18/F is about two-thirds of the minimum value required by the sum rule for a T = 1 nucleus. Cross sections were extracted for the /sup 9/Be(p,n)/sup 9/B (g.s.) reaction at 99.1 MeV. Analyzing powers for the ground-state transition were extracted for the /sup 9/Be(vector p,n)/sup 9/B reaction at 134.0 MeV. Cross sections and analyzing powers were measured for the /sup 28/Si(p,n)/sup 28p/ (6/sup -/, 4.95 MeV) reaction at 135.2 and 133.5 MeV, respectively.

• Research Organization: Kent State Univ., OH (USA)
• OSTI ID: 6144037
• Country of Publication: United States
• Language: English

Related Subjects

651323* -- Nuclear Properties & Reactions
A=6-19
Experimental-- Energy Levels & Transitions-- (-1987)
651423 -- Nuclear Properties & Reactions
A=20-38
Experimental-- Energy Levels & Transitions-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA DECAY RADIOISOTOPES
ANALYZING POWER
BARYON REACTIONS
BARYONS
BERYLLIUM 9 TARGET
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
BORON 9
BORON ISOTOPES
CHARGE-EXCHANGE REACTIONS
CHARGED-PARTICLE REACTIONS
COMPARATIVE EVALUATIONS
CROSS SECTIONS
DATA
DIFFERENTIAL CROSS SECTIONS
DISTORTED WAVE THEORY
ELEMENTARY PARTICLES
ENERGY RANGE
ENERGY SPECTRA
ENERGY-LEVEL TRANSITIONS
EVEN-EVEN NUCLEI
EXPERIMENTAL DATA
FERMIONS
FLUORINE 16
FLUORINE 18
FLUORINE ISOTOPES
HADRON REACTIONS
HADRONS
HOURS LIVING RADIOISOTOPES
INFORMATION
ISOTOPES
LIGHT NUCLEI
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 10-100
MEV RANGE 100-1000
NEUTRONS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUCLEONS
NUMERICAL DATA
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
OXYGEN 16 TARGET
OXYGEN 18 TARGET
PROTON REACTIONS
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
SHELL MODELS
SILICON 28
SILICON 28 TARGET
SILICON ISOTOPES
SPECTRA
STABLE ISOTOPES
TARGETS