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Electric quadrupole strength in /sup 16/O from the /sup 15/N(p-arrow-right,. gamma. /sub 0/) /sup 16/O reaction reaction

Wissink, S.W. ; Hanna, S.S. ; Mavis, D.G. ; Wang, T.R.

Phys. Rev. C; (United States), 1988-06, Vol.37:6

United States

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Título:
Electric quadrupole strength in /sup 16/O from the /sup 15/N(p-arrow-right,. gamma. /sub 0/) /sup 16/O reaction reaction
Autor: Wissink, S.W. ; Hanna, S.S. ; Mavis, D.G. ; Wang, T.R.
Assuntos: 651320 - Nuclear Properties & Reactions, A=6-19, Experimental ; ACCELERATORS ; ANALYZING POWER ; ANGULAR DISTRIBUTION ; BARYON REACTIONS ; BEAMS ; CAPTURE ; CHARGED-PARTICLE REACTIONS ; CROSS SECTIONS ; DATA ; DISTRIBUTION ; E1-TRANSITIONS ; E2-TRANSITIONS ; ELECTROMAGNETIC RADIATION ; ELECTROSTATIC ACCELERATORS ; ENERGY RANGE ; ENERGY-LEVEL TRANSITIONS ; EQUATIONS ; EVEN-EVEN NUCLEI ; EXPERIMENTAL DATA ; GAMMA RADIATION ; HADRON REACTIONS ; INFORMATION ; IONIZING RADIATIONS ; ISOTOPES ; LIGHT NUCLEI ; MATRIX ELEMENTS ; MEV RANGE ; MEV RANGE 01-10 ; MEV RANGE 10-100 ; MULTIPOLE TRANSITIONS ; NITROGEN 15 TARGET ; NUCLEAR PHYSICS AND RADIATION PHYSICS ; NUCLEAR REACTIONS ; NUCLEI ; NUCLEON REACTIONS ; NUMERICAL DATA ; OXYGEN 16 ; OXYGEN ISOTOPES ; POLARIZED BEAMS ; PROTON REACTIONS ; RADIATIONS ; STABLE ISOTOPES ; SUM RULES ; TARGETS ; VAN DE GRAAFF ACCELERATORS
É parte de: Phys. Rev. C; (United States), 1988-06, Vol.37:6
Descrição: Angular distributions of the relative cross sections and analyzing powers have been measured for the /sup 15/N(p-arrow-right,..gamma../sub 0/)/sup 16/O reaction in approx. =500 keV steps for excitation energies in /sup 16/O between 17.8 and 24.9 MeV. All E1 and E2 transition matrix elements were determined using a partial-wave analysis. Below 22 MeV, little quadrupole strength was found in excess of that predicted in direct capture calculations. A clear enhancement of the E2 cross section was observed at energies above 22 MeV. Our data indicate that about 10% of the isoscalar E2 sum rule for /sup 16/O is exhausted in the p/sub 0/ decay channel between 18 and 25 MeV, with approximately (34 of this integrated strength concentrated between 22 and 25 MeV. The E2 strength seen in (..gamma..,p/sub 0/) is strikingly different from that observed in (..cap alpha..,..cap alpha..') or (..cap alpha..,..cap alpha..'p). The effect of the M1 state at E/sub x/ = 18.8 MeV previously found in (p,..gamma..) studies is clearly observed.
Editor: United States
Idioma: Inglês

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Electric quadrupole strength in /sup 16/O from the /sup 15/N(p-arrow-right,. gamma. /sub 0/) /sup 16/O reaction reaction

Wissink, S.W. ; Hanna, S.S. ; Mavis, D.G. ; Wang, T.R.

United States

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