Neutron Spectra from Nuclear Reactions Induced by 16-Mev Protons

1951 ◽  
Vol 81 (1) ◽  
pp. 51-60 ◽  
Author(s):  
P. C. Gugelot
Keyword(s):  
Nuclear Reactions ◽  
Neutron Spectra ◽  
Mev Protons

Measurement of neutron spectra generated from bombardment of 4 to 24 MeV protons on a thick9Be target and estimation of neutron yields

2014 ◽  
Vol 85 (6) ◽  
pp. 063501 ◽  
Author(s):  
Sabyasachi Paul ◽  
G. S. Sahoo ◽  
S. P. Tripathy ◽  
S. C. Sharma ◽  
Ramjilal ◽  
...  
Keyword(s):  
Neutron Spectra ◽  
Mev Protons

Nuclear Reactions of Silver and Indium with 200- and 400-MeV Protons

1968 ◽  
Vol 165 (4) ◽  
pp. 1273-1281 ◽  
Author(s):  
J. A. Panontin ◽  
N. T. Porile ◽  
A. A. Caretto
Keyword(s):  
Nuclear Reactions ◽  
Mev Protons

scholarly journals FORMATION OF 7Be IN NUCLEAR REACTIONS INDUCED BY 85-MeV PROTONS

1966 ◽  
Vol 44 (22) ◽  
pp. 2749-2767 ◽  
Author(s):  
M. S. Lafleur ◽  
N. T. Porile ◽  
L. Yaffe
Keyword(s):  
Cross Sections ◽  
Nuclear Reactions ◽  
Mev Protons ◽  
Good Agreement

Cross sections were measured for the formation of 7Be in targets bombarded with 85-MeV protons. The variation of these cross sections with the mass and neutron-to-proton ratio of the target was investigated.Cross-section calculations were performed on the assumption that 7Be is emitted from the irradiated target as an evaporated particle. Calculated and measured cross sections were in good agreement for medium and heavy targets (A > 55). The calculation underestimated the production of' 7Be in light targets (27 < A < 55).

Neutron spectra from 35 and 46 MeV protons, 16 and 28 MeV deuterons, and 44 MeV 3 He ions on thick beryllium

1979 ◽  
Vol 6 (5) ◽  
pp. 432-435 ◽  
Author(s):  
F. M. Waterman ◽  
F. T. Kuchnir ◽  
L. S. Skaggs ◽  
R. T. Kouzes ◽  
W. H. Moore
Keyword(s):  
Neutron Spectra ◽  
Mev Protons

scholarly journals Cross Sections for the \(^{nat}\)Zr\((p,xn)^{89,90}\)Nb Reactions Induced by 27.7 MeV Protons

2015 ◽  
Vol 25 (3) ◽  
pp. 257 ◽  
Author(s):  
Pham Duc Khue ◽  
Nguyen Van Do ◽  
Le Tuan Anh
Keyword(s):  
Proton Beam ◽  
Cross Sections ◽  
High Purity ◽  
Hpge Detector ◽  
Nuclear Reactions ◽  
Medical Science ◽  
Activation Method ◽  
Reaction Products ◽  
High Purity Germanium ◽  
Mev Protons

The cross-sections for the formation of \(^{89}\)Nb and  \(^{90}\)Nb radionuclides in proton induced nuclear reactions on zirconium  were measured by using the well known activation method. The natural  zirconium (\(^{nat}\)Zr) target and copper (\(^{nat}\)Cu) monitor foils were  irradiated by 27.7 MeV proton beam at the MC50 Cyclotron of the Korea  Institute of Radiological and Medical Science (KIRAMS), Korea. The induced  gamma activities of the reaction products were measured by a coaxial high  purity germanium (HPGe) detector coupled to a PC-based multichannel  analyzer. The obtained cross sections for each nuclide are compared with  those existing in literature and with the theoretical cross sections  calculated by the TALYS - 1.4 code.

An Experimental Survey of Nuclear Reactions Induced by 57 MeV Protons Part II (p, d) Reactions

1965 ◽  
Vol 20 (12) ◽  
pp. 2118-2128 ◽  
Author(s):  
Yoshihide Ishizaki ◽  
Ken Kikuchi ◽  
Kazuhisa Matsuda ◽  
Takashi Mikumo ◽  
Yutaka Nakajima ◽  
...  
Keyword(s):  
Nuclear Reactions ◽  
Mev Protons ◽  
Experimental Survey

PROTON ACTIVATION ANALYSIS (PAA): A COMPLEMENT TO PIXE AND PIGE ANALYSIS

1993 ◽  
Vol 03 (01) ◽  
pp. 73-79 ◽  
Author(s):  
NORMAN M. HALDEN ◽  
FRANK C. HAWTHORNE
Keyword(s):  
Activation Analysis ◽  
Gamma Rays ◽  
Coulomb Barrier ◽  
Nuclear Reactions ◽  
Radioactive Isotopes ◽  
X Rays ◽  
Proton Activation ◽  
Sufficient Energy ◽  
Mev Protons ◽  
Proton Activation Analysis

At E p =40 MeV , protons have sufficient energy to overcome the coulomb barrier of most elements. The resultant interaction between protons and nucleii of many can produce radioactive isotopes via nuclear reactions. The decay schemes of isotopes created in this manner may include the emission X-rays and gamma-rays that can provide useful analytical information.

scholarly journals Proton-induced reactions on Fe, Cu, and Ti from threshold to 55 MeV

2021 ◽  
Vol 57 (3) ◽  
Author(s):  
Andrew S. Voyles ◽  
Amanda M. Lewis ◽  
Jonathan T. Morrell ◽  
M. Shamsuzzoha Basunia ◽  
Lee A. Bernstein ◽  
...  
Keyword(s):  
Cross Sections ◽  
Nuclear Reactions ◽  
National Laboratory ◽  
A Priori ◽  
Theoretical Models ◽  
Security Applications ◽  
Reaction Channels ◽  
Proton Induced Reactions ◽  
Titanium Foils ◽  
Mev Protons

AbstractTheoretical models often differ significantly from measured data in their predictions of the magnitude of nuclear reactions that produce radionuclides for medical, research, and national security applications. In this paper, we compare a priori predictions from several state-of-the-art reaction modeling packages (CoH, EMPIRE, TALYS, and ALICE) to cross sections measured using the stacked-target activation method. The experiment was performed using the Lawrence Berkeley National Laboratory 88-Inch Cyclotron with beams of 25 and 55 MeV protons on a stack of iron, copper, and titanium foils. Thirty-four excitation functions were measured from 4–55 MeV, including the first measurement of the independent cross sections for $$^{\mathrm{nat}}\hbox {Fe}$$ nat Fe (p,x)$$^{49,51}\hbox {Cr}$$ 49 , 51 Cr , $$^{51,{\mathrm{52m}},{\mathrm{52g}},56}\hbox {Mn}$$ 51 , 52 m , 52 g , 56 Mn , and $$^{{\mathrm{58m,58g}}}\hbox {Co}$$ 58 m , 58 g Co . All of the models, using default input parameters to assess their predictive capabilities, failed to reproduce the isomer-to-ground state ratio for reaction channels at compound and pre-compound energies, suggesting issues in modeling the deposition or distribution of angular momentum in these residual nuclei.

scholarly journals A study of neutron emission spectra and angular distribution of neutron from (p,n) reaction on some targets of heavy elements

2016 ◽  
Vol 19 (4) ◽  
pp. 131-136
Author(s):  
Thu Thi Ai Nguyen
Keyword(s):  
Angular Distribution ◽  
Neutron Energy ◽  
Nuclear Reactions ◽  
Neutron Emission ◽  
Emission Spectra ◽  
Energy Spectra ◽  
Distribution Data ◽  
Angle Distribution ◽  
Neutron Spectra ◽  
Driven System

For the design of ADS (Accelerator Driven System), it is important to study neutron spectra and details of nuclear reactions induced by neutrons. Furthermore, neutron energy and angular distribution data are important for a correct simulation of the propagation of particles inside a spallation target and the geometrical distribution of the outgoing neutron flux. Many experimental results are available for thin targets and massive targets additional studies of neutron spectra and neutron production were investigated to design target for ADS with incident proton energies up to 3 GeV. In our study, the angular distribution and the neutron energy spectra are reported for the (p,n) reaction on target nuclei such as Pb, U, W with energy from 50 MeV to 350 MeV calculated with database of JENDL-HE 2007. We obtain a set of data about the angular distribution and energy spectra of produced neutrons on some heavy targets with energy ranges as stated above. From the results of neutron spectra, the paper also gives many comments to recommend a choice of materials for target and energies for accelerating proton beam . From the angle distribution of neutrons generated in (p, n) reactions on the different targets with the different energies of proton, the solutions to arrange the reflection bars in reactor proposed. A comparison is also made to improve the reliability for calculation of the paper.

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