According to the Szilard–Chalmers effect, 99Mo recoil atoms can be obtained in nuclear reactions and recorded in a collector. Knowledge of the dependence of the yield of 99Mo atoms on the thickness of the molybdenum layer is necessary for their efficient collection. The yield of 99Mo recoil atoms from molybdenum nanolayers in the nuclear reaction 100Mo(p, x)99Mo was measured as a function of the thickness of the nanolayer. Nanolayers of metallic molybdenum were fabricated by magnetron sputtering on sapphire plates. The measurements were performed after the nanolayers were irradiated by 28 MeV protons in the U-150 cyclotron. The yield of 99Mo recoil atoms for 38–205 nm thick nanolayers was 65–8%. It was found that the maximum 99Mo yield obtains with molybdenum layer thickness 80 ± 5 nm. It was found that the free path of 99Mo recoil atoms in native metallic molybdenum is equal to 34 ± 9 nm.
Similar content being viewed by others
References
L. I. Men’shikov, A. N. Semenov, and D. Yu Chuvilin, “Calculation of the yield of recoil atoms in the reaction 98Mo(n, γ)99Mo from molybdenum (IV) disulfi de nanoparticles,” At. Energ, 114, No. 4, 226–229 (2013); Atomic Energy [English translation], 114, No. 4, 280–284 (2013).
D. Yu. Chuvilin, V. A. Zagryadskii, L. I. Men’shikov, et al., Patent 2490737 RF, “Method of obtaining the radioisotope molybdenum-99,” subm. Aug. 20, 2013, Byull. Izobret. Polezn. Modeli, No. 23, 469–470 (2013).
D. Yu. Chuvilin, Ya. M. Kravets, T. A. Udalova, et al., Patent 2588594 RF, “Method of fabricating a nanostructured target for the production of the radioisotope molybdenum-99,” Byull. Izobret. Polezn. Modeli, No. 19 (2016), electronic version.
A. A. Artyukhov, V. A. Zagryadskii, Ya. M. Kravets, et al., “Measurement of 99Mo yield in 100Mo(p, x)99Mo upon 30 MeV proton irradiation of multicomponent submicron particles,” At. Energ., 124, No. 4, 219–223 (2018); Atomic Energy [English translation], 124, No. 4, 261–265 (2013).
S. Takacs, “Nuclear data for accelerator production of 99mTc,” in: Fin. Rep. of the Coordinated Research Project, On Accelerator-Based Alternatives to Non-HEU Production of Mo-99/Tc-99m, IAEA, Vienna (2015), pp. 69–90.
H. Schiott, “Approximations and interpolation rules for ranges and range straggling,” Radiat. Eff., 6, 107–113 (1970).
J. Ziegler, D. Ziegler, and J. Biersack, “The stopping and range of ions in matter,” Nucl. Instr. Meth. Phys. Res. B, 268, No. 11–12, 1818–1823 (2010).
Author information
Authors and Affiliations
Corresponding author
Additional information
Translated from Atomnaya Énergiya, Vol. 126, No. 3, pp. 171–174, March, 2019.
Rights and permissions
About this article
Cite this article
Artyukhov, A.A., Artyukhov, A.A., Zagryadskii, V.A. et al. Recoil Atom Yield in 100Mo(p, x)99Mo During 28 MeV Proton Irradiation of Nanosize Molybdenum Layers. At Energy 126, 197–201 (2019). https://doi.org/10.1007/s10512-019-00536-y
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10512-019-00536-y