Benchmark experiment for the cross section of the 100Mo(p,2n)99mTc and 100Mo(p,pn)99Mo reactions

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS

卷:375

Article

Takacs, S.¹  Ditroi, F.¹  Aikawa, M.²  Haba, H.³  Otuka, N.⁴ 

[1] Hungarian Acad Sci, Inst Nucl Res, H-4026 Debrecen, Hungary

[2] Hokkaido Univ, Fac Sci, Sapporo, Hokkaido 0600810, Japan

[3] RIKEN, Nishina Ctr Accelerator Based Sci, Wako, Saitama 3510198, Japan

[4] IAEA, Nucl Data Sect, A-1400 Vienna, Austria

关键词: Tc-99m;    Mo-99;    Thick target count rate;    Cross section;    Cyclotron;   

DOI  :  10.1016/j.nimb.2016.03.040

来源: Elsevier

【 摘 要 】

As nuclear medicine community has shown an increasing interest in accelerator produced Tc-99m radionuclide, the possible alternative direct production routes for producing Tc-99m were investigated intensively. One of these accelerator production routes is based on the Mo-100(p,2n)Tc-99m reaction. The cross section of this nuclear reaction was studied by several laboratories earlier but the available data-sets are not in good agreement. For large scale accelerator production of Tc-99m based on the (100)mMo(p,2n)Tc-99m reaction, a well-defined excitation function is required to optimise the production process effectively. One of our recent publications pointed out that most of the available experimental excitation functions for the Mo-100 (p,2n)(99)mTc reaction have the same general shape while their amplitudes are different. To confirm the proper amplitude of the excitation function, results of three independent experiments were presented (Takacs et al., 2015). In this work we present results of a thick target count rate measurement of the E-gamma = 140.5 keV gamma-line from molybdenum irradiated by E-p = 17.9 MeV proton beam, as an integral benchmark experiment, to prove the cross section data reported for the Mo-100(p,2n)Tc-99m and Mo-100(p,pn)Mo-99 reactions in Takacs et al. (2015). (C) 2016 Elsevier B.V. All rights reserved.

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