scholarly journals FORTRAN PROGRAMS FOR COMPUTING ANGULAR DISTRIBUTIONS AND Q VALUES OF NUCLEAR REACTIONS

1963 ◽  
Author(s):  
H.W. Broek
Keyword(s):  
Nuclear Reactions ◽  
Angular Distributions ◽  
Q Values

scholarly journals Precision measurements on oxygen formation in stellar helium burning with gamma-ray beams and a Time Projection Chamber

2021 ◽  
Author(s):  
Robin Smith ◽  
Moshe Gai ◽  
Sarah Stern ◽  
Deran Schweitzer ◽  
Mohammad Ahmed
Keyword(s):  
Time Projection Chamber ◽  
Gamma Ray ◽  
Nuclear Reactions ◽  
Angular Distributions ◽  
Helium Burning ◽  
Low Energies ◽  
Important Input ◽  
Novel Method ◽  
Time Projection ◽  
First Time

Abstract Stellar Evolution theory relies on our knowledge of nuclear reactions, with the carbon/oxygen (C/O) ratio, at the end of helium burning, being the single most important input. However, the C/O ratio is still not known with sufficient accuracy, due to large uncertainties in the cross section for the fusion of helium with 12C to form 16O, denoted as the 12C(α,γ)16O reaction. We present initial results at moderately low energies using a novel method, which is significantly different from the experimental efforts of the past four decades. Precise angular distributions of the 12C(α,γ)16O reaction were obtained by measuring the inverse 16O(γ,α)12C reaction with gamma-beams and a Time Projection Chamber detector. These allowed us to measure, for the first time, the interference angle of the l = 1 and 2 partial waves contributing to this reaction (φ12), which agrees with predictions based on the unitarity of the scattering matrix.

Ejectile angular distributions in Boltzmann master equation theory of nuclear reactions

1997 ◽  
Vol 405 (3-4) ◽  
pp. 219-223 ◽  
Author(s):  
M. Cavinato ◽  
E. Fabrici ◽  
E. Gadioli ◽  
E. Gadioli Erba ◽  
E. Risi
Keyword(s):  
Master Equation ◽  
Nuclear Reactions ◽  
Angular Distributions

Experimental study of angular distributions and optimum Q values in heavy-ion reactions

1973 ◽  
Vol 44 (1) ◽  
pp. 47-49 ◽  
Author(s):  
J.P. Schiffer ◽  
H.J. Körner ◽  
R.H. Siemssen ◽  
K.W. Jones ◽  
A. Schwarzschild
Keyword(s):  
Experimental Study ◽  
Heavy Ion ◽  
Angular Distributions ◽  
Heavy Ion Reactions ◽  
Q Values

Hardware-Software Complex for Measurement of Energy and Angular Distributions of Charged Particles Formed in Nuclear Reactions

2017 ◽  
Vol 80 (9) ◽  
pp. 1500-1508
Author(s):  
O. P. Vikhlyantsev ◽  
L. N. Generalov ◽  
A. V. Kuryakin ◽  
I. A. Karpov ◽  
N. E. Gurin ◽  
...  
Keyword(s):  
Nuclear Reactions ◽  
Charged Particles ◽  
Angular Distributions ◽  
Software Complex ◽  
Energy And Angular Distributions

A COMPARATIVE STUDY OF THE 12C+24Mg SYSTEM WITH DEEP AND SHALLOW POTENTIALS

2005 ◽  
Vol 14 (04) ◽  
pp. 663-673 ◽  
Author(s):  
I. BOZTOSUN ◽  
O. BAYRAK ◽  
Y. DAGDEMIR
Keyword(s):  
Comparative Study ◽  
Coulomb Barrier ◽  
Optical Model ◽  
Nuclear Reactions ◽  
Angular Distributions ◽  
Wide Energy Range ◽  
Excitation Functions ◽  
Theoretical Predictions ◽  
Long Time ◽  
Wide Energy

Studying nuclear reactions near the Coulomb barrier shows a number of problems which have remained unsolved for a long time: The out-of-phase problem between theoretical predictions and experimental data; the reproductions of the oscillatory structure near the Coulomb barrier; the consistent description of angular distributions together with the excitation functions data are just some of these problems. In order to address and overcome these problems, by considering a comparative study of the shallow and deep optical potentials, the elastic scattering angular distributions and excitation functions data of the 12 C +24 Mg reaction have been analyzed within the framework of the optical model over a wide energy range. The potential depths near the Coulomb barrier according to the increasing energy and threshold anomaly are discussed in terms of the shallow and deep potentials. Excellent agreement between theoretical results and measured data is obtained by using the optical model.

Angular distributions for a range of Q-values in the reaction F19(d, p)F20

1963 ◽  
Vol 45 ◽  
pp. 369-382 ◽  
Author(s):  
V.M. Rout ◽  
W.M. Jones ◽  
D.G. Waters
Keyword(s):  
Angular Distributions ◽  
Q Values

scholarly journals Angular Distributions in the Reactions 11B(d, p)12B and 11B(d, a)9Be

1965 ◽  
Vol 18 (5) ◽  
pp. 491 ◽  
Author(s):  
DG Sargood ◽  
GD Putt
Keyword(s):  
Reaction Mechanism ◽  
Nuclear Reactions ◽  
Angular Distributions ◽  
Distorted Wave ◽  
Direct Mechanism

In recent years considerable interest has centred on the reaction mechanism in nuclear reactions. At bombarding energies of above about 5 MeV, it has been apparent for many years that (d, p) and (d, n) reactions tend to be dominated by the direct stripping reaction. With the advent of distorted wave stripping theories such as those of Tobocman (1959) and Robson (1961), it now appears that those reactions may proceed by a direct mechanism even at very low bombarding energies. Robson and Weigold (1963) have satisfactorily analysed the angular distributions obtained in the reaction llB(d, p)12B at bombarding energies of 1�02 MeV and 700keV.

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