ANGULAR DISTRIBUTIONS FROM (d,d′) REACTIONS ON 1f7/2 SHELL NUCLEI AT 7.50-Mev BOMBARDING ENERGY

1966 ◽  
pp. 350-353
Author(s):  
T.A. Belote ◽  
W.E. Dorenbusch ◽  
Ole Hansen
Keyword(s):  
Angular Distributions ◽  
Bombarding Energy

The interaction of atomic particles with solid surfaces at intermediate energies IV. The energy and angular distributions of particles scattered with electric charge from polycrystalline platinum at bombarding energies of 500-5000 eV

1974 ◽  
Vol 341 (1625) ◽  
pp. 213-231 ◽  
Keyword(s):  
Charged Particles ◽  
Solid Surfaces ◽  
Hydrogen Ion ◽  
Angular Distributions ◽  
Sodium Potassium ◽  
Intermediate Energies ◽  
Polycrystalline Platinum ◽  
Composite Spectra ◽  
Energy And Angular Distributions ◽  
Bombarding Energy

The distributions in angle and energy for charged particles emitted from polycrystalline platinum bombarded with ions of hydrogen, sodium, potassium and some hydrocarbons, have been measured, in continuation of previous work (Cawthron, Cotterell & Oliphant 1969 a , b , parts I and II; 1970, part III) to lower energies. Composite spectra are presented, including ions of both signs. The flux of emitted charged particles, under hydrogen ion bombardment, is shown to contain approximately equal numbers of protons and H¯ ions, except at the lowest bombarding energies, where the latter apparently predominate. Scattering in all cases is shown to increase with bombarding energy over the range covered, the increase being near linear for hydrogen and very rapid for alkalimetal ions. In all cases the total emission of charged particles is very small at the lowest bombarding energies employed.

The cross-section and angular distribution of the D-D reactions below 50 keV

1953 ◽  
Vol 216 (1124) ◽  
pp. 57-65 ◽  
Keyword(s):  
Angular Distribution ◽  
Total Cross Section ◽  
Cross Section ◽  
Proportional Counter ◽  
Angular Distributions ◽  
Asymmetry Coefficient ◽  
Gas Target ◽  
The Asymmetry ◽  
The Cross ◽  
Bombarding Energy

A thin gas target was used and the particles from the reactions were detected by a proportional counter. The results show that the total cross-section for the two reactions is the same to within 1%, but that the angular distributions of the products are significantly different. The asymmetry coefficient for the reaction D( d , n ) 3 He is given by 0·31 + 0·0058 E , compared with 0·13 + 0·0047 E for reaction D( d , p ) 3 H, where E is the bombarding energy in kilovolts.

Study of the 48Ti(α,p)51V and 50Ti(3He,d)51V Reactions

1971 ◽  
Vol 49 (8) ◽  
pp. 1053-1065 ◽  
Author(s):  
P. N. Maheshwari ◽  
U. C. Gupta ◽  
C. St-Pierre
Keyword(s):  
Optical Model ◽  
Energy Levels ◽  
Angular Distributions ◽  
Model Parameters ◽  
Model Calculations ◽  
Angular Momenta ◽  
Rotator Model ◽  
Spectroscopic Factors ◽  
New Energy ◽  
Bombarding Energy

The reactions 48Ti(α,p)51V at ten bombarding energies between 8.25 and 10.75 MeV and 50Ti(3He,d)51V at 10 MeV bombarding energy have been studied. Energy levels of 51V up to 4.85 and 6.17 MeV have been observed by (α,p) and (3He,d) reactions respectively. The (α,p) reaction yielded many new energy levels. The angular distributions for deuterons were measured at lab angles between 15° and 120°, and compared with predictions of DWBA calculations using the TSALLY code from which the transferred angular momenta and spectroscopic factors were deduced. These experimental results are examined from the viewpoint of shell model and strong coupling rotator model calculations. The effect of changing various optical model parameters is also discussed.

scholarly journals Differential Cross Sections for the 13C(3He, p0) and 15N(3He, p0) Reactions at 15 MeV

1975 ◽  
Vol 28 (3) ◽  
pp. 247 ◽  
Author(s):  
J Havloujian ◽  
G Ravalli ◽  
BM Spice
Keyword(s):  
Cross Sections ◽  
Differential Cross ◽  
Optical Model ◽  
Residual Nucleus ◽  
Angular Distributions ◽  
Model Parameters ◽  
Differential Cross Sections ◽  
Channel Parameters ◽  
Free Parameters ◽  
Bombarding Energy

The angular distributions of the ground state proton groups from 3He-induced reactions with 13C and BN targets have been measured at a bombarding energy of 15 MeV. The DWBA program DWUCK has been used to fit the differential cross sections with no free parameters. The optical model parameters for the proton-residual nucleus channel were taken from the literature, and the 3He-target nucleus channel parameters were obtained by fitting the 3He elastic scattering differential cross sections.

The cross-sections and angular distributions of the D—D reactions between 150 and 450 keV

1954 ◽  
Vol 226 (1165) ◽  
pp. 206-216 ◽  
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Deuteron Beam ◽  
Angular Distributions ◽  
Centre Of Mass ◽  
Mass System ◽  
Gas Target ◽  
Neutron Reaction ◽  
The Cross ◽  
Bombarding Energy

A thin gas target was used and the 3 He and 3 H particles from the reactions were counted in two proportional counters which were rotated to make angles between 20 and 135° (in the centre-of-mass system) with the incident deuteron beam. In contradiction to data previously published for this energy range, the angular distributions of the reactions are different, the asymmetry of the neutron-producing reaction being the greater. The total cross-section of the neutron reaction is greater than that of the proton reaction; the ratio of the cross-sections increases with bombarding energy.

ISOTOPIC EFFECTS IN EMISSION OF INTERMEDIATE MASS FRAGMENTS IN THE 124Sn + 64Ni REACTION AT 35 MeV/NUCLEON

2011 ◽  
Vol 20 (02) ◽  
pp. 546-551
Author(s):  
◽  
I. SKWIRA-CHALOT ◽  
T. CAP ◽  
K. SIWEK-WILCZYŃSKA ◽  
J. WILCZYŃSKI
Keyword(s):  
Angular Dependence ◽  
Rest Frame ◽  
Neck Region ◽  
Angular Distributions ◽  
Isotopic Ratios ◽  
Intermediate Mass ◽  
Bombarding Energy ◽  
Isotopic Effects

We present results of a new analysis of the experiment carried out by the REVERSE-ISOSPIN collaboration on the 124 Sn + 64 Ni reaction at the bombarding energy of 35 MeV/nucleon. The mass numbers of the intermediate mass fragments (isotopes of Be , B and C ) could be resolved in this experiment. Angular distributions of the neck fragmentation products in the rest frame of the primary projectile-like fragment were studied. The angular dependence of the isotopic ratios of the intermediate mass fragments proves the effect of neutron enrichment of the neck region.

12C(12C, 8Be)16O angular distributions and excitation functions between 35 and 69 MeV bombarding energy

1976 ◽  
Vol 257 (1) ◽  
pp. 144-164 ◽  
Author(s):  
A. Weidinger ◽  
K.A. Eberhard ◽  
E. Mathiak ◽  
J. Stettmeier ◽  
W. Trombik ◽  
...  
Keyword(s):  
Angular Distributions ◽  
Excitation Functions ◽  
Bombarding Energy

scholarly journals A Study of the 42Ca(p,?)43Sc Reaction

1977 ◽  
Vol 30 (4) ◽  
pp. 417 ◽  
Author(s):  
GU Din ◽  
B Heusch
Keyword(s):  
Excited States ◽  
Reasonable Agreement ◽  
Resonance Level ◽  
Angular Distributions ◽  
Proton Capture ◽  
Capture Reaction ◽  
Decay Properties ◽  
Theoretical Predictions ◽  
Bombarding Energy ◽  
First Time

The 42Ca(p, y)43SC reaction has been studied below 2�75 MeV proton bombarding energy. Approximately 100 resonances have been identified and located in the range Ep = 2�00-2�75 MeV. Nine resonances at Ep = 1045, 1201, 1299, 1319, 2038, 2471, 2523, 2643 and 2714 keV for the 42Ca(p, y)43SC reaction were investigated with either a 54 or a 120 cm3 Ge(Li) detector. Single spectra were obtained at each of these resonances, and these were used to derive consistent y ray decay schemes and accurate level energies for the resonant and bound levels of 43Sc. Fifty-two bound levels up to an excitation energy of 4�47 MeV were observed, out of which seventeen new levels have been identified at 2�114,2� 796,2' 846,2' 860,2' 875,3 '160,3' 331,3' 374,3 '463,3;504,3' 645, 3'734,3'757,3'860,4'007,4'038 and 4�430 MeV. In addition, new results or results differing from earlier reports have been obtained for the decay properties of levels below 4�47 MeV in 43SC? The strengths of the nine resonances were measured relative to the reported strength at Ep = 2038 keV. The resonance at Ep = 2643 keV was shown for the first time to populate levels of spin> 7/2 via the proton capture reaction. A strong M1 (analogue to anti-analogue) transition from the resonance level to the level at 1� 931 MeV (9/2+) was observed. From measurements of y ray angular distributions, the following spin and parity assignments were made: 9/2+ at 7'514, 7/2+ at 4'371, >7/2 at 4'038 and 7/2 at 3�808 MeV. The resonance level at 7�514 MeV has possibly aT = 3/2 character. The low-lying excited states in 43SC are in reasonable agreement with the theoretical predictions of Johnstone (1968).

scholarly journals Analysis of 6Li+16O elastic scattering using different potentials

2020 ◽  
Vol 66 (3 May-Jun) ◽  
pp. 322
Author(s):  
Sh. Hamada ◽  
B. Alshahrani ◽  
Abd Elrahman Elgamala ◽  
N. Darwish ◽  
I. Bondouk ◽  
...  
Keyword(s):  
Elastic Scattering ◽  
Optical Potential ◽  
Cluster Structure ◽  
Scattering Data ◽  
Angular Distributions ◽  
Folding Potential ◽  
Nuclear Interference ◽  
Double Folding ◽  
Bombarding Energy ◽  
Coulomb Nuclear Interference

Available experimental angular distributions for 6Li elastically scattered from 16O nucleus in the energy range 13.0–50.0 MeV are reanalyzed within the framework of optical potential, double folding optical potential as well as cluster folding potential. Special interest was paid to the cluster folding based on the well-known cluster structure of 6Li. Elastic scattering data for 6Li+16O system plotted as a function of momentum transfer showed that the real Coulomb nuclear interference region independent of the bombarding energy. This structural behavior for the data could be used to define the interaction potential with some certainty and to extract reliable values for the renormalization factors.  

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