Publications related to Atomic vapor laser isotope separation

The isotopic signature of U(V) during bacterial reduction

Marinella Mazzanti, Rizlan Bernier-Latmani, Margaux Camille Andréa Molinas, Radmila Faizova, Ashley Richards Brown

The two-step electron transfer during bacterial reduction of UVI to UIV is typically accompanied by mass-independent fractionation of the 238U and 235U isotopes, whereby the heavy isotope accumulates in the reduced product. However, the role of the UV inte ...

2024

Molecular simulation on two-dimensional nanoporous material for energy-efficient separation

Mohammad Tohidivahdat

The energy-consumption by the chemical and petrochemical industry in the European Union (EU) accounts for about quarter of its energy footprint. Approximately half of this energy goes toward chemical separation, currently dominated by thermally-driven pro ...

EPFL2023

Effect of fuel isotope mass on q-profile formation in JET hybrid plasmas

Matteo Fontana

The initial current ramp phase of JET hybrid plasmas is used to optimise the target q-profile for main heating to allow access to high beta and avoid MHD instabilities. Mixed protium-deuterium experiments, carried out at JET since the installation of the b ...

IOP Publishing Ltd2020

The Impact of Surfactants on the Inertial Separation of Bubbles in Microfluidic Electrolyzers

Demetri Psaltis, Seyyed Mohammad Hosseini Hashemi, Pooria Hadikhani

Improving the throughput of electrochemical reactions such as water electrolysis is an ongoing effort. In a membrane-less electrolyzer, product separation can be achieved via controlled two-phase flows within the electrochemical flow cells. In this case, i ...

ELECTROCHEMICAL SOC INC2020

Temporal broadening of attosecond photoelectron wavepackets from solid surfaces

Christopher Alexander Arrell

The response of solids to electromagnetic fields is of crucial importance in many areas of science and technology. Many fundamental questions remain to be answered about the dynamics of the photoexcited electrons that underpin this response, which can evol ...

Optical Soc Amer2015

Experimental tests of an advanced proton-to-neutron converter at ISOLDE-CERN

The suppression of isobaric contaminations is of growing importance for many scientific programs using radioactive isotopes produced at isotope separation on-line (ISOL) facilities, such as ISOLDE-CERN. A solid tungsten proton-to-neutron converter has been ...

Elsevier Science Bv2014

Reduced temperature sensitivity of the polarization properties of hydrogenated InGaAsN V-groove quantum wires

Elyahou Kapon, Alok Rudra, Benjamin Dwir, Romain Carron, Marco Felici

We investigated the effects of hydrogen irradiation on the degree of linear polarization, rho, of the light emitted by site-controlled, dilute-nitride InGaAsN V-groove quantum wires (QWRs). While in the as-grown sample the polarization of the QWR emission ...

American Institute of Physics2012

Isotopically selective collisional vibrational energy transfer in CF3H

Thomas Rizzo, Oleg Boyarkine

We investigate here the mechanism of collisionally-enhanced isotopic selectivity observed in infrared multiple photon dissociation (IRMPD) of vibrationally pre-excited CF3H by Boyarkin et al. (J. Chem. Phys. 118, 93 (2003)). For both the carbon-12 and carb ...

2007

Laser isotope separation method employing isotopically selective collisional relaxation

Thomas Rizzo

A method of separating isotopes from polyatomic molecules, in particular C from trifluoromethane HCF3, by applying to the polyatomic molecules in the gas phase infrared laser beams of different frequencies to produce multiphoton dissociation and reacti ...

2007

Efficient, highly selective laser isotope separation of carbon-13

Thomas Rizzo, Oleg Boyarkine

We recently demonstrated an original approach to highly selective laser isotope separation of carbon-13 that employs vibrational overtone pre-excitation of CF3 H together with infrared multiphoton dissociation [O.V. Boyarkin, M. Kowalczyk, T.R. Rizzo, J. C ...

Springer-Verlag2006

On isotopically selective collisional energy transfer and infrared multiple photon absorption by vibrationally highly excited molecules

Richard Bossart

This study focuses on an interesting and important phenomenon that was employed in a new approach to laser isotope separation that has been recently proposed and developed in our laboratory for highly selective separation of carbon isotopes. This approach ...

EPFL2005