Production of 55Co via the 54Fe(d,n)-process and excitation functions of 54Fe(d,t)53Fe and 54Fe(d,α)52mMn reactions from threshold up to 13.8 MeV
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M. R. Zaman
Abstract
For production of the medically interesting β+-emitter 55Co (T1/2=17.6 h) via the 54Fe(d,n)-reaction, 91.6% enriched 54Fe2O3, mixed with Al powder, was pressed to a pellet which could be irradiated with 14 MeV deuterons at 4µA in a water-cooled target system. A separation method was developed which led to >99.9% pure 55Co and allowed a recovery of the enriched target material. For a target thickness of Ed=12.6 → 5 MeV, the experimental thick target yield of 55Co after chemical separation amounted to about 13 MBq/µA·h, which is about 60% of the theoretical value. In a 3 h irradiation at 4µA, the batch yield of 55Co achieved was 160 MBq (4.3 mCi). An 8 h irradiation could lead to a batch yield of about 400 MBq. The 54Fe(d,n) reaction leads to the highest purity 55Co but it is essential that the isotopic enrichment of the target is not less than 90%. In addition to the production work, cross sections were measured for the 54Fe(d,t) 53Fe and 54Fe(d,α)52mMn reactions using the standard stacked-foil technique and high-resolution γ-ray spectrometry. The cross section ratio for the isomeric pair 52m,gMn is discussed in terms of the spins of the two states involved and the increasing projectile energy.
© 2003 Oldenbourg Wissenschaftsverlag GmbH
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Articles in the same Issue
- Some rules to improve the energy resolution in alpha liquid scintillation with beta rejection
- Confidence intervals for experiments with background and small numbers of events
- Solubility product of Pu(VI) hydrous oxide
- Precipitation of crystalline neptunium dioxide from near-neutral aqueous solution
- Stability of U(VI) solid phases in the U(VI)-Ca2+-SiO2-OH system
- Synergistic extraction of Th(IV) by 2-hydroxy-1-naphthaldehyde thiosemicarbazone and neutral donors
- Production of 55Co via the 54Fe(d,n)-process and excitation functions of 54Fe(d,t)53Fe and 54Fe(d,α)52mMn reactions from threshold up to 13.8 MeV
- Potential in vivo generator for alpha-particle therapy with 212Bi: Presentation of a system to minimize escape of daughter nuclide after decay of 212Pb to 212Bi
- In vitro study of the interaction between neptunium ions and aposerumtransferrin by absorption spectrophotometry and ultrafiltration: the case of Np(V)
