Measurement of the Excitation Function
of 96 Zr(α,x) 99 Mo Reaction up to 32 MeV
Masayuki Hagiwara, Hiroshi Yashima, Toshiya Sanami, and Shunsuke Yonai
1 Introduction
Technetium 99m and its parent isotope: molybdenum 99 is one of the most
important radioisotopes used in nuclear medicine for common diagnostic imaging
technologies such as single photon emission computed tomography (SPECT).
After the well-recognized worldwide shortage of 99m Tc/ 99 Mo due to the long
shutdowns of major nuclear research reactors in 2009–2010, some alternate sources
of 99m Tc/ 99 Mo using accelerators have been investigated for their stable supply [1].
We have focused on the production route of 99 Mo via the 96 Zr(α,n) 99 Mo reaction
using a low energy accelerator. In order to estimate the production yield of 99 Mo and
its byproducts, we irradiated 46.4 MeV alpha particles onto stacked nat Zr targets at
a cyclotron facility (NIRS-930), National Institutes for Quantum and Radiological
Science and Technology, Japan.
M. Hagiwara () · T. Sanami
High Energy Accelerator Research Organization, Tsukuba, Ibaraki, Japan
e-mail: hagi@post.kek.jp
H. Yashima
Institute for Integrated Radiation and Nuclear Science, Kyoto University, Sennan-gun, Osaka,
Japan
S. Yonai
National Institutes for Quantum and Radiological Science and Technology, Chiba-shi, Chiba,
Japan
© This is a U.S. government work and not under copyright protection
in the U.S.; foreign copyright protection may apply 2021
J. Escher et al. (eds.), Compound-Nuclear Reactions, Springer Proceedings in
Physics 254, https://doi.org/10.1007/978-3-030-58082-7_33
255
of 96 Zr(α,x) 99 Mo Reaction up to 32 MeV
Masayuki Hagiwara, Hiroshi Yashima, Toshiya Sanami, and Shunsuke Yonai
1 Introduction
Technetium 99m and its parent isotope: molybdenum 99 is one of the most
important radioisotopes used in nuclear medicine for common diagnostic imaging
technologies such as single photon emission computed tomography (SPECT).
After the well-recognized worldwide shortage of 99m Tc/ 99 Mo due to the long
shutdowns of major nuclear research reactors in 2009–2010, some alternate sources
of 99m Tc/ 99 Mo using accelerators have been investigated for their stable supply [1].
We have focused on the production route of 99 Mo via the 96 Zr(α,n) 99 Mo reaction
using a low energy accelerator. In order to estimate the production yield of 99 Mo and
its byproducts, we irradiated 46.4 MeV alpha particles onto stacked nat Zr targets at
a cyclotron facility (NIRS-930), National Institutes for Quantum and Radiological
Science and Technology, Japan.
M. Hagiwara () · T. Sanami
High Energy Accelerator Research Organization, Tsukuba, Ibaraki, Japan
e-mail: hagi@post.kek.jp
H. Yashima
Institute for Integrated Radiation and Nuclear Science, Kyoto University, Sennan-gun, Osaka,
Japan
S. Yonai
National Institutes for Quantum and Radiological Science and Technology, Chiba-shi, Chiba,
Japan
© This is a U.S. government work and not under copyright protection
in the U.S.; foreign copyright protection may apply 2021
J. Escher et al. (eds.), Compound-Nuclear Reactions, Springer Proceedings in
Physics 254, https://doi.org/10.1007/978-3-030-58082-7_33
255