Search Results - "Bergeron, Denis E"

Formation of Al13I-: Evidence for the superhalogen character of Al13 by BERGERON, Denis E, WELFORD CASTLEMAN, A. JR, MORISATO, Tsuguo, KHANNA, Shiv N

“…Al13- is a cluster known for the pronounced stability that arises from coincident closures of its geometric and electronic shells. We present experimental…”
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Phase stability and lithium loading capacity in a liquid scintillation cocktail by Bergeron, Denis E., Mumm, H. P., Tyra, M. A.

“…Liquid scintillation cocktails loaded with neutron capture agents such as 6 Li are used in both neutron and neutrino detectors. For detectors designed to…”
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Ligand Dissociation and Core Fission from Diphosphine-Protected Gold Clusters by Bergeron, Denis E, Hudgens, Jeffrey W

“…Highly monodisperse samples of diphosphine ligand (1,3-bis(diphenylphosphino)propane- or 1,5-bis(diphenylphosphino)pentane)-protected gold nanoparticles form…”
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Impact of Swapping Ethyl for Phenyl Groups on Diphosphine-Protected Undecagold by Golightly, Justin S, Gao, Lin, Castleman, A. Welford, Bergeron, Denis E, Hudgens, Jeffrey W, Magyar, Rudolph J, Gonzalez, Carlos A

“…1,3-Bis(diethylphosphino)propane (depp) protected gold clusters are synthesized and studied via electrospray ionization mass spectrometry. An undecagold…”
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Comparison of calibration coefficients for a vinten ionization chamber simulated using four Monte Carlo methods by Broder, Brittany A., Bergeron, Denis E., Fitzgerald, Ryan, Zimmerman, Brian E.

“…The Vinten 671 ionization chamber (VIC) was modelled using Monte Carlo (MC) programs EGSnrc, Penelope, and TOPAS. Several national measurement institutes have…”
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Monte Carlo modelling of live-timed anticoincidence (LTAC) counting for Cu-64 by Bergeron, Denis E., Fitzgerald, Ryan

“…The radionuclide copper-64 is a promising candidate for nuclear medicine, but its complex decay creates challenges in the primary standardization of its…”
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In memoriam Jeffrey Stewart Schweitzer 1946–2022 by Coursey, Bert M., Bergeron, Denis E., Livingston, Richard A., Schweitzer, Peter

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Identification of Phase Boundaries in Surfactant Solutions via Compton Spectrum Quenching by Bergeron, Denis E

“…The critical micelle concentration and the phase boundary between isolated surfactant molecules and aggregates are probed via fluorescence spectroscopy and a…”
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Realization and dissemination of activity standards for medically important alpha-emitting radionuclides by Bergeron, Denis E., Kossert, Karsten, Collins, Sean M., Fenwick, Andrew J.

“…Interest in targeted cancer therapy with alpha-emitting radionuclides is growing. To evaluate emerging radiotherapeutic agents requires precise activity…”
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Gravimetric deposition of microliter drops with radiometric confirmation by Bergeron, Denis E., Essex, Richard, Nour, Svetlana, Shaw, Gordon A., Verkouteren, R. Michael, Fitzgerald, Ryan P.

“…A manual microliter gravimetric dispensing technique is demonstrated using a micropipettor modified for use with removeable microcapillaries. Liquid…”
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An update on ‘dose calibrator’ settings for nuclides used in nuclear medicine by Bergeron, Denis E, Cessna, Jeffrey T

“…BACKGROUNDMost clinical measurements of radioactivity, whether for therapeutic or imaging nuclides, rely on commercial re-entrant ionization chambers (‘dose…”
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Activity standard and calibrations for 227Th with ingrowing progeny by Bergeron, Denis E., Cessna, Jeffrey T., Broder, Brittany A., Pibida, Leticia, Fitzgerald, Ryan P., DiGiorgio, Morgan, Napoli, Elisa, Zimmerman, Brian E.

“…Thorium-227 was separated from its progeny and standardized for activity by the triple-to-double coincidence ratio (TDCR) method of liquid scintillation…”
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Micellar phase boundaries under the influence of ethyl alcohol by Bergeron, Denis E.

“…The Compton spectrum quenching technique is used to monitor the effect of ethyl alcohol (EtOH) additions on phase boundaries in two systems. In toluenic…”
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Liquid scintillation efficiencies, gamma-ray emission intensities, and half-life for Gd-153 by Bergeron, Denis E, Cessna, Jeffrey T, Fitzgerald, Ryan P, Hamad, Gulakhshan, Laureano-Pérez, Lizbeth, Pibida, Leticia, Zimmerman, Brian E

“…Gadolinium-153 was standardized for activity by live-timed anticoincidence counting and an ampoule was submitted to the international reference system (SIR)…”
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Primary standardization of 212Pb activity by liquid scintillation counting by Bergeron, Denis E., Cessna, Jeffrey T., Fitzgerald, Ryan P., Laureano-Pérez, Lizbeth, Pibida, Leticia, Zimmerman, Brian E.

“…An activity standard for 212Pb in equilibrium with its progeny was realized, based on triple-to-double coincidence ratio (TDCR) liquid scintillation (LS)…”
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Two determinations of the (223)Ra half-life by Bergeron, Denis E, Fitzgerald, Ryan

“…Ra-223 is an alpha-emitter that is being used as a bone-seeking radiotherapeutic agent. The relatively large uncertainty on its evaluated half-life (0.26%, Bé…”
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Determination of micelle size in some commercial liquid scintillation cocktails by Bergeron, Denis E.

“…Dynamic light scattering measurements were performed on commercially available liquid scintillation (LS) cocktails over a range of aqueous and acid contents…”
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Ra-224 activity, half-life, and 241 keV gamma ray absolute emission intensity: A NIST-NPL bilateral comparison by Bergeron, Denis E., Collins, Sean M., Pibida, Leticia, Cessna, Jeffrey T., Fitzgerald, Ryan, Zimmerman, Brian E., Ivanov, Peter, Keightley, John D., Napoli, Elisa

“…The national metrology institutes for the United Kingdom (UK) and the United States of America (USA) have compared activity standards for 224Ra, an α-particle…”
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Radionuclide calibrator responses for 224Ra in solution and adsorbed on calcium carbonate microparticles by Napoli, Elisa, Cessna, Jeffrey T., Pibida, Leticia, Fitzgerald, Ryan, Hjellum, Gro E., Bergeron, Denis E.

“…A suspension of 224Ra adsorbed onto CaCO3 microparticles shows promise for α-therapy of intracavitary micro-metastatic diseases. To facilitate accurate…”
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Two determinations of the Ge-68 half-life by Bergeron, Denis E., Cessna, Jeffrey T., Zimmerman, Brian E.

“…In nuclear medicine, 68Ge is used to generate 68Ga for imaging by positron emission tomography (PET) and sealed sources containing 68Ge/68Ga in equilibrium…”
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