DETERMINATION OF THE ANGULAR DISTRIBUTION OF THE GROUND AND FIRST EXCITED STATES OF O-17 AT MODERATE ENERGIES (1.6 Mev) IN AND OUT OF A F-18 RESONANCE

Journal Article · Sun Jan 01 04:00:00 EST 1961 · Revista Mexicana de Fisica (Mexico)

OSTI ID:4808259

de Lopez, E O

The angular distribution in the reaction O/sup 16/(d,p)O/sup 17/ (1) shows a remarkable increase of the cross section at higher angles. To determine more carefully this increase, studies were carried out using a Van de Graaff accelerator and a broad-range magnetic spectrograph. The resonance energy of the compound nucleus O/sup 16/ + d was first established; angular distribution of the O/sup 17/ ground and first excited levels were run at bombarding energios of 1.65 and 1.53 Mev, respectively, in and out of the F/sup 18/ resonance (E/sub x/ = 8.99 Mev). The C/sup 13/ (0) was observed too, when bombarding with 1.65-Mev particles. By comparing experimental curves with theoretical ones, obtained by the Butler theory, for both incident deuteron energies, it is possible to associate the neutron capture momenta l/sub n/ = 2 and l/sup n/ = 1 to the (d,p) reactions leading to the ground states of O/sup 17/ and C/sup 13/ respectively; the values l/sub n/ = 0 and l/sub n/ = 4 can be fitted simultaneously to the O/ sup 17/ (1) state. Although the background is higher in resonance than out of it, both cases show a notable increase around 95 deg cms comparable with the be applicable to the observed shape of the 871-kev level in O/sup 17/ as it would lead to l/sub n/ = 4, which is not a reasonable assignment for O/sup 17/ (1). (auth)

• Research Organization: Universidad Nacional de Mexico, Mexico City
• NSA Number: NSA-16-011041
• OSTI ID: 4808259
• Journal Information: Revista Mexicana de Fisica (Mexico), Journal Name: Revista Mexicana de Fisica (Mexico) Vol. Vol: 10; ISSN RMXFA
• Country of Publication: Country unknown/Code not available
• Language: Spanish

Related Subjects

ANGULAR DISTRIBUTION
ANGULAR MOMENTUM
BACKGROUND
BUTLER THEORY
CAPTURE
CARBON 13
CROSS SECTIONS
DEUTERON BEAMS
DIRECT REACTIONS
ENERGY LEVELS
ENERGY RANGE
EXCITATION
FLUORINE 18
MAGNETIC FIELDS
MEASURED VALUES
MEV RANGE
MOMENTUM
NEUTRONS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
OXYGEN 17
PHYSICS
PROTONS
RESONANCE
SPECTROMETERS
VAN DE GRAAFF ACCELERATORS