The {sup 18}O(d,p){sup 19}O reaction and the ANC method

Journal Article · Fri May 09 00:00:00 EDT 2014 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4875304· OSTI ID:22280382

Burjan, V.; Hons, Z.; Kroha, V.; Mrázek, J.; Piskoř, Š. ^[1]; Mukhamedzhanov, A. M.; Trache, L.; Tribble, R. E. ^[2]; La Cognata, M.; Lamia, L.; Pizzone, G. R.; Puglia, S. M. R.; Rapisarda, G. G.; Romano, S.; Sergi, M. L.; Spartà, R.; Spitaleri, C. ^[3]; Gulino, M.; Tumino, A. ^[4]

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1. Nuclear Physics Institute of Czech Academy of Sciences, 250 68 Řež (Czech Republic)
2. Cyclotron Institute, Texas A and M University, College Station, TX 77843 (United States)
3. Università di Catania and INFN Laboratori Nazionali del Sud, Catania (Italy)
4. Università degli Studi di Enna KORE, Enna, Italy and Università di Catania and INFN Laboratori Nazionali del Sud, Catania (Italy)

The neutron capture rate {sup 18}O(n,γ){sup 19}O is important for analysis of nucleosynthesis in inhomogeneous Big Bang models and also for models of processes in massive red giant stars and AGB stars. Angular distributions of the {sup 18}O(d,p){sup 19}O reaction were measured at a deuteron energy of 16.3 MeV in NPI in Řež, Czech Republic, with the aim to determine Asymptotic Normalization Coefficients which can then be used for indirect determination of the direct contribution to the {sup 18}O(n,γ){sup 19}O process. In the experiment, the gas target with {sup 18}O isotope of high purity 99.9 % was used thus eliminating any contaminating reactions. Reaction products were measured by the set of 8 ΔE-E telescopes consisting of thin and thick silicon surface-barrier detectors. Angular distributions of proton transfers corresponding to 6 levels of {sup 19}O up to the 4.1093 MeV excitation energy were determined. The analysis of angular distributions in the angular range from 6 to 64 degree including also the angular distribution of elastically scattered deuterons was carried out by means of ECIS and DWUCK codes. From the determined ANCs the direct contribution to the radiative capture {sup 18}O(n,γ){sup 19}O was deduced and compared with existing direct measurements.

• OSTI ID: 22280382
• Journal Information: AIP Conference Proceedings, Vol. 1595, Issue 1; Conference: 7. European summer school on experimental nuclear astrophysics, Santa Tecla, Sicily (Italy), 15-17 Sep 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
ASYMPTOTIC SOLUTIONS
CAPTURE
COMPARATIVE EVALUATIONS
CZECH REPUBLIC
D CODES
DEUTERON REACTIONS
E CODES
EXCITATION
MEV RANGE
NEUTRON REACTIONS
NUCLEOSYNTHESIS
OXYGEN 18 TARGET
OXYGEN 19
PROTONS
RED GIANT STARS
SI SEMICONDUCTOR DETECTORS
SURFACE BARRIER DETECTORS