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Excitation function for natMo(p,x) reactions with covariance analysis

Sumit Bamal, S. Lawitlang, B. Lalremruata, A. Mazumdar, S. Pal, M. S. Pose, V. Nanal, Rebecca Pachuau

Abstract

The excitation functions of proton induced reactions on natMo targets are measured using the activation technique followed by off-line γ-ray spectroscopy with improved precision. The experiment was performed at the BARC-TIFR Pelletron Linac Facility, Mumbai. Thin samples of natMo were irradiated with a proton beam of energies ranging from 13 to 22 MeV for measurements of various (p,x) cross sections, with an emphasis on the production of medical isotopes. The present data for 93mTc and 94gTc address and resolve the discrepancies in the existing data. The 93gTc radioisotope production is extracted with appropriate corrections for 93mTc contribution. While the measured cross sections for the production of 95gTc, 96g+mTc, 99mTc and 99Mo are consistent with the reported data, significant differences are observed for 89g+mZr. A comprehensive uncertainty analysis, including the correlation coefficients of the measured reaction cross sections is also presented.

Excitation function for natMo(p,x) reactions with covariance analysis

Abstract

The excitation functions of proton induced reactions on natMo targets are measured using the activation technique followed by off-line γ-ray spectroscopy with improved precision. The experiment was performed at the BARC-TIFR Pelletron Linac Facility, Mumbai. Thin samples of natMo were irradiated with a proton beam of energies ranging from 13 to 22 MeV for measurements of various (p,x) cross sections, with an emphasis on the production of medical isotopes. The present data for 93mTc and 94gTc address and resolve the discrepancies in the existing data. The 93gTc radioisotope production is extracted with appropriate corrections for 93mTc contribution. While the measured cross sections for the production of 95gTc, 96g+mTc, 99mTc and 99Mo are consistent with the reported data, significant differences are observed for 89g+mZr. A comprehensive uncertainty analysis, including the correlation coefficients of the measured reaction cross sections is also presented.
Paper Structure (18 sections, 25 equations, 11 figures, 14 tables)

This paper contains 18 sections, 25 equations, 11 figures, 14 tables.

Table of Contents

  1. Introduction
  2. Experimental details
  3. Data Analysis
  4. cross section measurement
  5. Uncertainty analysis and correlation coefficients
  6. Results and Discussion
  7. Production of $^{89g+m}$Zr
  8. Production of $^{93}$Tc
  9. Production of $^{93g+m}$Tc
  10. Production of $^{93m}$Tc:
  11. Production of $^{93g}$Tc
  12. Production of $^{94g}$Tc:
  13. Production of $^{95g+m}$Tc:
  14. Production of $^{96g+m}$Tc:
  15. Production of $^{99}$Mo:
  16. ...and 3 more sections

Figures (11)

  • Figure 1: Absolute detector efficiency of HPGe detectors as a function of energy along with the fitted curves.
  • Figure 2: Measured half-life of (a)$^{95g}$Tc and (b)$^{96g}$Tc together with fit function (error bars in data points are smaller than symbol size.
  • Figure 3: Excitation function for production of $^{89g+m}$Zr.
  • Figure 4: Excitation function of $^{\text{nat}}$Mo(p,x)$^{93\text{g+m}}$Tc reaction.
  • Figure 5: Excitation function of $^{\text{nat}}$Mo(p,x)$^{93\text{m}}$Tc reaction.
  • ...and 6 more figures