User profiles for Denis E. Bergeron

Denis Bergeron

National Institute of Standards and Technology
Verified email at nist.gov
Cited by 2791

Formation of Al13I-: Evidence for the Superhalogen Character of Al13

DE Bergeron, AW Castleman Jr, T Morisato… - Science, 2004 - science.org
Al 13 – is a cluster known for the pronounced stability that arises from coincident closures of
its geometric and electronic shells. We present experimental evidence for a very stable …

The international reference system for beta-particle emitting radionuclides: Validation through the pilot study CCRI (II)-P1. Co-60

…, MAL da Silva, E Bendall, DE Bergeron… - Applied Radiation and …, 2023 - Elsevier
The Bureau International des Poids et Mesures (BIPM) is developing a new transfer
instrument to extend its centralized services for assessing the international equivalence of …

Stable cluster motifs for nanoscale chromium oxide materials

DE Bergeron, AW Castleman, NO Jones… - Nano Letters, 2004 - ACS Publications
We show that by varying the formation conditions, two distinct families of stable chromium
oxide nanoparticles can be generated, each with unique electronic and magnetic properties. …

Reactions of Al n I x - with Methyl Iodide:  The Enhanced Stability of Al7I and the Chemical Significance of Active Centers

DE Bergeron, PJ Roach, AW Castleman Jr… - Journal of the …, 2005 - ACS Publications
Al n I x - are reacted with methyl iodide, and the reaction mechanisms and products are
discussed. The relevance of previous studies of the reactions between bare aluminum clusters …

An update on 'dose calibrator'settings for nuclides used in nuclear medicine

DE Bergeron, JT Cessna - Nuclear medicine communications, 2018 - journals.lww.com
Background Most clinical measurements of radioactivity, whether for therapeutic or imaging
nuclides, rely on commercial re-entrant ionization chambers (‘dose calibrators’). The …

Zero electron kinetic energy spectroscopy of the para-fluorotoluene cation

VL Ayles, CJ Hammond, DE Bergeron… - The Journal of …, 2007 - pubs.aip.org
The S1 state of the para-fluorotoluene pFT molecule has been the subject of a number of
studies, which have been focused directly or indirectly upon the methyl group. Okuyama et al. 1 …

Ligand exchange reactions in the formation of diphosphine-protected gold clusters

DE Bergeron, O Coskuner, JW Hudgens… - The Journal of …, 2008 - ACS Publications
Ligand exchange reactions important in the formation of L 3 - and L 5 -protected gold clusters
(L 3 = 1,3-bis(diphenylphosphino)propane; L 5 = 1,5-bis(diphenylphosphino)pentane) are …

Ligand dissociation and core fission from diphosphine-protected gold clusters

DE Bergeron, JW Hudgens - The Journal of Physical Chemistry C, 2007 - ACS Publications
Highly monodisperse samples of diphosphine ligand (1,3-bis(diphenylphosphino)propane-
or 1,5-bis(diphenylphosphino)pentane)-protected gold nanoparticles form rapidly in a mixed …

Impact of swapping ethyl for phenyl groups on diphosphine-protected undecagold

…, L Gao, AW Castleman, DE Bergeron… - The Journal of …, 2007 - ACS Publications
1,3-Bis(diethylphosphino)propane (depp) protected gold clusters are synthesized and studied
via electrospray ionization mass spectrometry. An undecagold cluster, [Au 11 (depp) 4 Cl …

The next generation of current measurement for ionization chambers

R Fitzgerald, DE Bergeron, SP Giblin, DG Jarrett… - Applied Radiation and …, 2020 - Elsevier
Re-entrant ionization chambers (ICs) are essential to radionuclide metrology and nuclear
medicine for maintaining standards and measuring half-lives. The requirements of top-level …