Proton resonance spectroscopy in sup 36 Ar

Thesis/Dissertation · Fri Jan 01 04:00:00 EST 1988

OSTI ID:6996706

Brooks, Jr, W K

Excitation functions for proton elastic scattering and for proton-induced reactions on {sup 35}Cl were measured with the KN Van de Graaff accelerator and associated high resolution system at TUNL. Differential cross sections for {sup 35}Cl(p,p{sub 0}), (p,p{sub 1}), (p,p{sub 2}), (p, {alpha}{sub 0}), and (p, {alpha}{sub 1}) were measured in the range E{sub p} = 0.6 to 4.0 MeV. The data were measured at five angles with an overall resolution of about 350 eV. The measured excitation functions were analyzed with a multi-level, multi-channel R-matrix formalism for approximately 200 levels. Resonance parameters were extracted. The resonance parameters included resonance energy, total angular momentum, parity, partial elastic and reaction widths, channel spin or orbital angular momentum mixing ratios, and for some resonances the relative signs of width amplitudes. A number of resonances have strong level-level interference effects. Comparison of these data with the Porter-Thomas distribution resulted in good agreement of almost all channels which had a statistically significant number of resonances. These comparisons indicate that nearly all the proton and alpha strength in {sup 36}Ar for this energy range was seen in the present study. The s-wave proton strength function ratio for s = 1 and s = 2 resonances was found to be consistent with previous measurements for 4N nuclei.

• Research Organization: Duke Univ., Durham, NC (USA)
• OSTI ID: 6996706
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
645100 -- High Energy Physics-- Particle Interactions & Properties-Experimental
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
74 ATOMIC AND MOLECULAR PHYSICS
ARGON 36
ARGON ISOTOPES
CALCULATION METHODS
CHLORINE 35
CHLORINE ISOTOPES
CROSS SECTIONS
DATA
DATA ANALYSIS
DIFFERENTIAL CROSS SECTIONS
ELASTIC SCATTERING
EVEN-EVEN NUCLEI
EXCITATION FUNCTIONS
EXPERIMENTAL DATA
FUNCTIONS
INFORMATION
ISOTOPES
LIGHT NUCLEI
MEASURING INSTRUMENTS
MEASURING METHODS
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
PARTIAL WAVES
PROTON SPECTRA
RESONANCE
S WAVES
SCATTERING
SPECTRA
STABLE ISOTOPES