D
Dmitri Medvedev
Researcher at Brookhaven National Laboratory
Publications - 20
Citations - 282
Dmitri Medvedev is an academic researcher from Brookhaven National Laboratory. The author has contributed to research in topics: Thorium & Proton. The author has an hindex of 8, co-authored 20 publications receiving 222 citations.
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Journal ArticleDOI
Large Scale Accelerator Production of 225Ac: Effective Cross sections for 78-192 MeV Protons Incident on 232Th Targets
Justin Griswold,Justin Griswold,Dmitri Medvedev,Jonathan W. Engle,Roy Copping,Jonathan Fitzsimmons,Valery Radchenko,Jason C. Cooley,Michael E. Fassbender,David Denton,Karen Murphy,Allison Owens,Eva R. Birnbaum,Kevin D. John,Francois M. Nortier,Daniel W Stracener,Lawrence Heilbronn,Leonard F. Mausner,Saed Mirzadeh +18 more
TL;DR: The high-energy proton spallation reaction on natural thorium metal targets has been utilized to produce millicurie quantities of 225Ac, andexcitation functions for actinium and thorium isotopes, as well as for some of the fission products.
Journal ArticleDOI
Development of a large scale production of 67Cu from 68Zn at the high energy proton accelerator: Closing the 68Zn cycle
Dmitri Medvedev,Leonard F. Mausner,George E. Meinken,S. Kurczak,Henry Schnakenberg,Cleveland J. Dodge,Elizabeth M. Korach,Suresh C. Srivastava +7 more
TL;DR: A number of research irradiations of (68)Zn was carried out at Brookhaven Linac Isotope Producer aiming to develop a practical approach to produce the radioisotope (67)Cu through the high energy (68]Zn(p,2p)(67) Cu reaction.
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Proton-induced production and radiochemical isolation of 44Ti from scandium metal targets for 44Ti/44Sc generator development
Valery Radchenko,Jonathan W. Engle,Dmitri Medvedev,Joel M. Maassen,Cleo Naranjo,George A. Unc,Catherine Meyer,Tara Mastren,Mark Brugh,Leonard F. Mausner,Cathy S. Cutler,Eva R. Birnbaum,Kevin D. John,F. Meiring Nortier,Michael E. Fassbender +14 more
TL;DR: A two-step ion exchange chromatography based chemical separation method is introduced: first, a coarse separation of 44Ti via anion exchange sorption in concentrated HCl results in a 44Tc/Sc separation factor of 102-103, and second, a cation exchange based step in HCl media is applied for 44Ti fine purification from residual Sc mass.
Journal ArticleDOI
Activation of natural Hf and Ta in relation to the production of 177Lu.
TL;DR: The feasibility of no-carrier added (177)Lu production in a proton accelerator was investigated and results are in good agreement with theoretical data calculated using computer codes MCNPX and ORIGEN2S.
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Radiometric evaluation of diglycolamide resins for the chromatographic separation of actinium from fission product lanthanides.
Valery Radchenko,Tara Mastren,Catherine Meyer,Alexander S. Ivanov,Vyacheslav S. Bryantsev,Roy Copping,David Denton,Jonathan W. Engle,Justin Griswold,Karen Murphy,Justin J. Wilson,Allison Owens,Lance E. Wyant,Eva R. Birnbaum,Jonathan Fitzsimmons,Dmitri Medvedev,Cathy S. Cutler,Leonard F. Mausner,Meiring F. Nortier,Kevin D. John,Saed Mirzadeh,Michael E. Fassbender +21 more
TL;DR: DFT calculations and experimental results reveal that Ac chemistry cannot be predicted from lanthanide behavior under comparable circumstances, and significantly higher selectivity of DGA based resins for LnIII over AcIII in the presence of nitrate.