Measurement of angular distributions from particle-energy spectra in gas-target scattering experiments

1975 ◽  
Vol 128 (1) ◽  
pp. 93-100 ◽  
Author(s):  
Charles A. Whitten
Keyword(s):  
Particle Energy ◽  
Energy Spectra ◽  
Angular Distributions ◽  
Gas Target

A STUDY OF THE Be9(He3, n)C11 REACTION

1963 ◽  
Vol 41 (7) ◽  
pp. 1036-1046 ◽  
Author(s):  
L. van der Zwan ◽  
A. T. Stewart ◽  
J. Y. Park ◽  
E. Merzbacher
Keyword(s):  
Compound Nucleus ◽  
Cross Sections ◽  
Interaction Mechanism ◽  
Direct Interaction ◽  
Particle Energy ◽  
Energy Spectra ◽  
Angular Distributions ◽  
Proton Recoil ◽  
The Cross ◽  
Photographic Emulsions

The energy spectra and angular distributions of the emergent neutrons from the Be9(He3, n)C11 reaction have been obtained for an incident He3-particle energy of 2 Mev with the technique of observing proton recoil in photographic emulsions. The cross sections were normalized to Be9(He3, p)B11 data observed simultaneously at 90° to the beam. The lack of similarity in the (He3, n) and (He3, p) mirror reactions to some residual states suggests a direct interaction mechanism rather than compound nucleus. An attempt to analyze some of the data in terms of double particle stripping has been made.

Shell and odd-even effects on alpha-particle energy spectra from the (p,α) reaction on nuclei around neutron number 50

1987 ◽  
Vol 35 (2) ◽  
pp. 467-478 ◽  
Author(s):  
I. Kumabe ◽  
Y. Mito ◽  
M. Hyakutake ◽  
N. Koori ◽  
H. Sakai ◽  
...  
Keyword(s):  
Alpha Particle ◽  
Neutron Number ◽  
Particle Energy ◽  
Energy Spectra ◽  
Alpha Particle Energy

MEASUREMENTS OF SPECTRAL AND ANGULAR DISTRIBUTIONS OF SECONDARY GAMMA-RAYS IN MATTER

1955 ◽  
Vol 33 (2) ◽  
pp. 96-109 ◽  
Author(s):  
G. N. Whyte
Keyword(s):  
Gamma Rays ◽  
Pulse Height ◽  
Energy Spectra ◽  
Angular Distributions ◽  
Barrier Thickness ◽  
Crystal Spectrometer ◽  
Theoretical Predictions ◽  
The Face ◽  
Concrete Barrier ◽  
Secondary Gamma Radiation

The distribution in energy and angle of the secondary gamma radiation emerging from the face of a concrete barrier containing a point source of cobalt-60 has been measured as a function of barrier thickness. Results on energy spectra and angular distributions are presented, and some of their features are compared with theoretical predictions. The operation of the two-crystal spectrometer and the photographic system for recording pulse-height distributions are described in some detail.

scholarly journals Neutron flux-density and secondary-particle energy spectra at the 184-inch synchrocyclotron medical facility

1981 ◽  
Vol 8 (5) ◽  
pp. 668-676 ◽  
Author(s):  
A. R. Smith ◽  
W. Schimmerling ◽  
L. L. Kanstein ◽  
J. G. McCaslin ◽  
R. H. Thomas
Keyword(s):  
Neutron Flux ◽  
Flux Density ◽  
Secondary Particle ◽  
Particle Energy ◽  
Energy Spectra ◽  
Medical Facility ◽  
Neutron Flux Density

scholarly journals Simulation of a CME-driven shock by anisotropic scattering angular distributions

2012 ◽  
Vol 8 (S294) ◽  
pp. 583-584
Author(s):  
Xin Wang ◽  
Yi-Hua Yan
Keyword(s):  
Monte Carlo Simulation ◽  
Cosmic Ray ◽  
Interplanetary Shock ◽  
Anisotropic Scattering ◽  
Particle Energy ◽  
Angular Distributions ◽  
Shock Acceleration ◽  
Diffusive Shock Acceleration ◽  
Mass Ejection ◽  
Mev Protons

AbstractObservations of the interplanetary shock provide us with strong evidences of particle acceleration to multi-MeV protons in a coronal mass ejection (CME). Diffusive shock acceleration (DSA) is an efficient mechanism for cosmic ray (CR). This work presents a dynamical Monte Carlo simulation of a CME-driven shock on 14-Dec-2006 by using a series of Gaussian scattering angular distributions. With the simulated results, we find that particle energy spectrum is affected by energy injection processes under the anisotropic scattering law.

scholarly journals Nuclear disintegrations produced by cosmic rays

1949 ◽  
Vol 196 (1046) ◽  
pp. 325-343 ◽  
Keyword(s):  
Cosmic Radiation ◽  
High Energy ◽  
Energy Spectra ◽  
Angular Distributions ◽  
Excitation Energies ◽  
Wide Range ◽  
High Energy Tail ◽  
Energy And Angular Distributions ◽  
Photographic Emulsions ◽  
Α Particles

Measurements have been made on the energy and angular distributions of the charged particles from disintegration ‘stars’ produced in the silver and bromine nuclei of photographic emulsions exposed to cosmic radiation. The observations extended over a wide range of excitation energies (100 to 700 MeV). The energy spectra and angular distributions of the protons can be explained in all cases by simple evaporation theory. This energy distribution shows also a high-energy tail consisting of direct knock-on protons and slow mesons. At high excitation energies the α-particles exhibit collimation effects which are probably due to localized ‘boiling’ or a form of fission.

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