scholarly journals Production Cross-Section Measurements for Terbium Radionuclides of Medical Interest Produced in Tantalum Targets Irradiated by 0.3 to 1.7 GeV Protons and Corresponding Thick Target Yield Calculations

2021 ◽  
Vol 8 ◽  
Author(s):  
Charlotte Duchemin ◽  
Thomas E. Cocolios ◽  
Kristof Dockx ◽  
Gregory J. Farooq-Smith ◽  
Olaf Felden ◽  
...  
Keyword(s):  
Cross Sections ◽  
Production Cross ◽  
Thick Target ◽  
Mass Separation ◽  
High Purity Germanium ◽  
Spallation Reactions ◽  
Target Yield ◽  
Target Production ◽  
Γ Spectrometry ◽  
Medical Interest

This work presents the production cross-sections of Ce, Tb and Dy radionuclides produced by 300 MeV to 1.7 GeV proton-induced spallation reactions in thin tantalum targets as well as the related Thick Target production Yield (TTY) values and ratios. The motivation is to optimise the production of terbium radionuclides for medical applications and to find out at which energy the purity of the collection by mass separation would be highest. For that purpose, activation experiments were performed using the COSY synchrotron at FZ Jülich utilising the stacked-foils technique and γ spectrometry with high-purity germanium detectors. The Al-27(p,x)Na-24 reaction has been used as monitor reaction. All experimental data have been systematically compared with the existing literature.

scholarly journals Can We Extract Production Cross-Sections from Thick Target Yield Measurements? A Case Study Using Scandium Radioisotopes

Instruments ◽  
2019 ◽  
Vol 3 (2) ◽  
pp. 29 ◽  
Author(s):  
Mateusz Sitarz ◽  
Jerzy Jastrzębski ◽  
Férid Haddad ◽  
Tomasz Matulewicz ◽  
Katarzyna Szkliniarz ◽  
...  
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Production Cross ◽  
Thick Target ◽  
Cross Section Data ◽  
Thick Target Yield ◽  
Section Data ◽  
Target Yield ◽  
Data Points

In this work, we present an attempt to estimate the reaction excitation function based on the measurements of thick target yield. We fit a function to experimental data points and then use three fitting parameters to calculate the cross-section. We applied our approach to 43Ca(p,n)43Sc, 44Ca(p,n)44gSc, 44Ca(p,n)44mSc, 48Ca(p,2n)47Sc and 48Ca(p,n)48Sc reactions. A general agreement was observed between the reconstructions and the available cross-section data. The algorithm described here can be used to roughly estimate cross-section values, but it requires improvements.

Dynamics of spallation reactions investigated from production cross sections of residual nuclei in collisions induced by238U at 1 A·GeV on proton and deuterium

2004 ◽  
Vol 734 ◽  
pp. 221-224 ◽  
Author(s):  
J. Pereira ◽  
P. Armbruster ◽  
J. Benlliure ◽  
M. Bernas ◽  
A. Boudard ◽  
...  
Keyword(s):  
Cross Sections ◽  
Production Cross ◽  
Spallation Reactions

Identification of 26-minute Zr-84

1983 ◽  
Vol 61 (4) ◽  
pp. 754-756 ◽  
Author(s):  
Seiichi Shibata ◽  
Paul J. Karol
Keyword(s):  
Cross Sections ◽  
Half Life ◽  
Production Cross ◽  
Isotopic Distribution ◽  
Absolute Abundance ◽  
Spallation Reactions ◽  
Relative Production ◽  
Γ Ray ◽  
The Absolute ◽  
Mev Protons

An unknown γ-ray of energy 112.5 keV was found in zirconium fractions chemically extracted from isotopically enriched molybdenum targets bombarded with 500 and 800 MeV protons. All evidence suggests that the γ-ray is identifiable with the decay of 84Zr to 84Y. A half-life of 25.7 ± 0.5 min was obtained for 84Zr, which is considerably longer than previously reported half-lives. The absolute abundance of the 112.5 keV γ-ray was also determined. Relative production cross sections for 84Zr were calculated using these results and were consistent with the values interpolated from isotopic distribution curves for spallation reactions.

Deduction of Heavy-Ion X-Ray Production Cross Sections from Thick-Target Yields,

1972 ◽  
Vol 6 (3) ◽  
pp. 1257-1257 ◽  
Author(s):  
Knud Taulbjerg ◽  
Peter Sigmund
Keyword(s):  
Cross Sections ◽  
Production Cross ◽  
Heavy Ion ◽  
Thick Target ◽  
X Ray

Experimental study on the Ag L-shell X-ray production cross-sections with thick-target method induced by positrons up to 9 keV

2019 ◽  
Vol 127 (5) ◽  
pp. 53001
Author(s):  
Y. Wu ◽  
Z. Y. Zhang ◽  
X. G. Xia ◽  
M. X. Xu ◽  
C. H. Chang ◽  
...  
Keyword(s):  
Experimental Study ◽  
Cross Sections ◽  
Production Cross ◽  
Thick Target ◽  
X Ray

Isotopic production cross sections of the residual nuclei in spallation reactions induced by 136Xe projectiles on proton at 500 A MeV

2013 ◽  
Vol 899 ◽  
pp. 116-132 ◽  
Author(s):  
L. Giot ◽  
J.A. Alcántara-Núñez ◽  
J. Benlliure ◽  
D. Pérez-Loureiro ◽  
L. Audouin ◽  
...  
Keyword(s):  
Cross Sections ◽  
Production Cross ◽  
Spallation Reactions

scholarly journals Experimental Determination of Excitation Function Curves through the Measurement of Thick Target Yields in Liquid Targets: The Examples of the 68Zn(p,n)68Ga and 64Zn(p,α)61Cu Nuclear Reactions

Instruments ◽  
2022 ◽  
Vol 6 (1) ◽  
pp. 3
Author(s):  
Sergio J. C. do Carmo ◽  
Francisco Alves
Keyword(s):  
Experimental Determination ◽  
Excitation Function ◽  
Cross Sections ◽  
Nuclear Reactions ◽  
Thick Target ◽  
Yield Curves ◽  
Thick Target Yield ◽  
Target Yield ◽  
Working Principle

The present work describes a method to determine excitation function curves and, therefore, cross-sections, making use of the irradiation of liquid targets at distinct energies in a biomedical cyclotron. The method relies on the derivative of experimentally measured thick target yield curves to determine the corresponding excitation function curves. The technique is presented as a valid and practical alternative to the commonly used activation method combined with the stack monitor technique, whose implementation in liquid targets offers practical difficulties. The working principle is exemplified by presenting the results obtained for the clinically relevant 68Zn(p,n)68Ga and the 64Zn(p,α)61Cu nuclear reactions, obtained though the irradiation of liquid targets containing dissolved natural zinc.

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