title: Measured bremsstrahlung photonuclear production of 99Mo ((99m)Tc) with 34 MeV to 1.7 GeV electrons.
abstract: (99)Mo photonuclear yield was measured using high-energy electrons from Laser Plasma Accelerators and natural molybdenum. Spectroscopically resolved electron beams allow comparisons to Monte Carlo calculations using known (100)Mo(γ,n)(99)Mo cross sections. Yields are consistent with published low-energy data, and higher energy data are well predicted from the calculations. The measured yield is (15±2)×10(-5) atoms/electron (0.92±0.11 GBq/μA) for 25 mm targets at 33.7 MeV, rising to (1391±20)×10(-5) atoms/electron (87±2 GBq/μA) for 54 mm/ 1.7 GeV, with peak power-normalized yield at 150 MeV.
authors.affiliation: Department of Physics and Astronomy, Minnesota State University, Mankato, MN 56001, USA. Electronic address: andrew.roberts@mnsu.edu.
authors.forename: A D
authors.initials: AD
authors.lastname: Roberts
authors.affiliation: Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA.
authors.forename: C G R
authors.initials: CGR
authors.lastname: Geddes
authors.affiliation: Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA.
authors.forename: N
authors.initials: N
authors.lastname: Matlis
authors.affiliation: Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA.
authors.forename: K
authors.initials: K
authors.lastname: Nakamura
authors.affiliation: Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA.
authors.forename: J P
authors.initials: JP
authors.lastname: O'Neil
authors.affiliation: Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA.
authors.forename: B H
authors.initials: BH
authors.lastname: Shaw
authors.affiliation: Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA.
authors.forename: S
authors.initials: S
authors.lastname: Steinke
authors.affiliation: Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA.
authors.forename: J
authors.initials: J
authors.lastname: van Tilborg
authors.affiliation: Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA.
authors.forename: W P
authors.initials: WP
authors.lastname: Leemans
mesh_terms: D003300:Copper / Q000528:radiation effects; D003301:Copper Radioisotopes / Q000528:radiation effects; D004340:Drug Contamination; D004583:Electrons; D005720:Gamma Rays; D006801:Humans; D007554:Isotopes / Q000528:radiation effects; D008982:Molybdenum / Q000528:radiation effects*; D009010:Monte Carlo Method; D009556:Niobium / Q000302:isolation & purification; D011868:Radioisotopes / Q000302:isolation & purification; D019275:Radiopharmaceuticals / Q000302:isolation & purification*; D013667:Technetium / Q000302:isolation & purification*
chemical_list: D003301:Copper Radioisotopes; D007554:Isotopes; D011868:Radioisotopes; D019275:Radiopharmaceuticals; D009556:Niobium; D013667:Technetium; D003300:Copper; D008982:Molybdenum
keywords: (99)Mo; (99m)Tc; Bremsstrahlung production