7 Be Emission Cross Sections in High Energy Proton Induced Reactions on 51V, 93Nb and 197Au

1990 ◽  
Vol 50 (4) ◽  
Author(s):  
R. Wölfle ◽  
S. M. Qaim
Keyword(s):  
Cross Sections ◽  
High Energy ◽  
High Energy Proton ◽  
Energy Proton ◽  
Proton Induced Reactions

scholarly journals Highest energy proton–nucleus cross-sections

2018 ◽  
Vol 33 (40) ◽  
pp. 1850242 ◽  
Author(s):  
L. Stodolsky
Keyword(s):  
Cosmic Rays ◽  
Cross Sections ◽  
High Energy ◽  
High Energy Proton ◽  
Proton Proton ◽  
Energy Proton ◽  
Black Disc ◽  
Simple Generalization ◽  
Very High Energy ◽  
Very High

The description of very high energy proton–proton cross-sections in terms of a “black disc” with an “edge” allows a simple generalization to highest energy proton–nucleus cross-sections. This results in a leading ln2W term and a ln W term whose coefficient depends linearly on the radius of the nucleus (W the c.m. energy). The necessary parameters are determined from the fits to p–p data. Since the coefficient of the ln W term is rather large, it is doubtful that the regime of ln2W dominance can be reached with available energies in accelerators or cosmic rays. However, the ln W term can be relevant for highest energy cosmic rays in the atmosphere, where a large increase for the cross-section on nitrogen is expected. Tests of the theory should be possible by studying the coefficient of ln W at p-nucleus colliders.

Proton-proton scattering at the C. E. R. N. Intersecting Storage Rings

1973 ◽  
Vol 335 (1603) ◽  
pp. 431-452 ◽  
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
High Energy ◽  
Storage Rings ◽  
The Other ◽  
Proton Scattering ◽  
High Energy Proton ◽  
Proton Proton ◽  
Total Cross Sections ◽  
Energy Proton

The main features of the C. E. R. N. Intersecting Storage Rings (I. S. R.) are reviewed, together with results obtained in 1971 and 1972 on elastic scattering and total cross-sections. The main result is a 10% increase of the total proton-proton cross-section in the I. S. R. energy range. The simplest picture of high energy proton-proton scattering which emerges from this and the other data, is briefly discussed.

scholarly journals Defining Processing Times for Accelerator Produced 225Ac and Other Isotopes from Proton Irradiated Thorium

Molecules ◽  
2019 ◽  
Vol 24 (6) ◽  
pp. 1095 ◽  
Author(s):  
Jonathan Fitzsimmons ◽  
Justin Griswold ◽  
Dmitri Medvedev ◽  
Cathy Cutler ◽  
Leonard Mausner
Keyword(s):  
Cross Sections ◽  
Proton Irradiation ◽  
High Energy ◽  
Time Dependent ◽  
High Energy Proton ◽  
Processing Times ◽  
Energy Proton ◽  
Thorium Target

During the purification of radioisotopes, decay periods or time dependent purification steps may be required to achieve a certain level of radiopurity in the final product. Actinum-225 (Ac-225), Silver-111 (Ag-111), Astatine-211 (At-211), Ruthenium-105 (Ru-105), and Rhodium-105 (Rh-105) are produced in a high energy proton irradiated thorium target. Experimentally measured cross sections, along with MCNP6-generated cross sections, were used to determine the quantities of Ac-225, Ag-111, At-211, Ru-105, Rh-105, and other co-produced radioactive impurities produced in a proton irradiated thorium target at Brookhaven Linac Isotope Producer (BLIP). Ac-225 and Ag-111 can be produced with high radiopurity by the proton irradiation of a thorium target at BLIP.

Formation Cross Sections of Nucleides Produced from Heavy Elements by High-energy Proton Bombardment

1974 ◽  
Vol 29 (5) ◽  
pp. 822-825
Author(s):  
B. K. Gupta ◽  
S. Das
Keyword(s):  
Cross Sections ◽  
High Energy ◽  
Heavy Elements ◽  
Proton Bombardment ◽  
High Energy Proton ◽  
Energy Proton

Abstract Theoretical cross sections for the production of elements from 209Bi and natural copper by high-energy proton bombardment have been calculated.

MESON EXCHANGE THEORY FOR HIGH ENERGY PROTON-PROTON SCATTERING

2006 ◽  
Vol 15 (01) ◽  
pp. 109-119
Author(s):  
K. PUMSA-ARD ◽  
W. UCHAI ◽  
Y. YAN
Keyword(s):  
Cross Sections ◽  
High Energy ◽  
Exchange Model ◽  
Meson Exchange ◽  
Medium Energy ◽  
High Energy Proton ◽  
Proton Proton ◽  
Small Momentum ◽  
Energy Proton ◽  
S 100

We study high energy proton-proton (pp) elastic reactions in a meson-exchange model. The observed differential cross sections at small momentum exchanges (|t|<0.8 GeV 2) are well reproduced for a large energy range (s~100 to 1000 GeV 2) in the model. Our study reveals that the meson-exchange model developed in the low and medium energy sector is applicable to the high-energy pp elastic reactions. It might be argued that high-energy reactions at small momentum transfers might be as soft as low and medium energy processes.

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