David C. McDonald

JET machine operations in T&D-T

E. Abdelrahman, Azizah Abdul Hamid, N. Abid, K. Abraham et autres

Abstract JET, the world’s largest operating tokamak with unique Be/W wall and tritium handling capability, completed a Deuterium-Tritium (D-T) campaign in 2021 (Maggi et al 29th Fusion Energy Conf.) following a decade of preparatory experiments, dedicated enhancements, technical rehearsals and training (Horton …

Overview of T and D–T results in JET with ITER-like wall

Domenico Abate, N. Abid, P. Abreu, O. Adabonyan et autres

Abstract In 2021 JET exploited its unique capabilities to operate with T and D–T fuel with an ITER-like Be/W wall (JET-ILW). This second major JET D–T campaign (DTE2), after DTE1 in 1997, represented the culmination of a series of JET enhancements—new fusion …

gb, fr (code pays fourni par la source)

Cyclotrimerization of Acetylene under Thermal Conditions: Gas-Phase Kinetics of V+ and Fe+ + C2H2

David C. McDonald, Brendan C. Sweeny, Albert A. Viggiano, Shaun G. Ard et autres

The kinetics of successive reactions of acetylene (C 2 H 2 ) initiated on either vanadium or iron atomic cations have been investigated under thermal conditions using the variable-ion source and temperature-adjustable selected-ion flow tube apparatus. Consistent with the literature results, the …

us (code pays fourni par la source)

Infrared spectroscopy of the protonated HCl dimer and trimer

J. Philipp Wagner, David C. McDonald, Jason E. Colley, Peter R. Franke et autres

The protonated HCl dimer and trimer complexes were prepared by pulsed discharges in supersonic expansions of helium or argon doped with HCl and hydrogen. The ions were mass selected in a reflectron time-of-flight spectrometer and investigated with photodissociation spectroscopy in the IR …

us (code pays fourni par la source)

Electronic structure of NdO via slow photoelectron velocity-map imaging spectroscopy of NdO ---

Mark Babin, Martin DeWitt, Jessalyn A. DeVine, David C. McDonald et autres

Electronically excited NdO is a possible product of the chemistry associated with the release of Nd into the ionosphere, and emission from these states may contribute to the observations following such experiments. To better characterize the energetics and spectroscopy of NdO, we …

us (code pays fourni par la source)

Gas-Phase Anionic Metal Clusters are Model Systems for Surface Oxidation: Kinetics of the Reactions of Mn– with O2 (M = V, Cr, Co, Ni; n = 1–15)

Brendan C. Sweeny, David C. McDonald, Nicholas S. Shuman, Albert A. Viggiano et autres

The reactions of anionic metal clusters M n – with O 2 (M = V ( n = 1–15), Cr ( n = 1–15), Co ( n = 1–12), and Ni ( n = 1–14)) are investigated from 300 to 600 K …

us, de (code pays fourni par la source)

Coining New Tax Guidance: How the IRS is Falling Behind in Crypto

David C. McDonald

In October 2019, the Internal Revenue Service offered its first guidance on cryptocurrency reporting standards in nearly five years. As digital investments become more commonly accepted, the need for regulation and guidance becomes clearer. Issues such as how to classify cryptocurrencies and …

Infrared spectroscopy and anharmonic theory of H3+Ar2,3 complexes: The role of symmetry in solvation

David C. McDonald, Brandon M. Rittgers, Riley A. Theis, Ryan C. Fortenberry et autres

The vibrational spectra of H3+Ar2,3 and D3+Ar2,3 are investigated in the 2000 cm−1 to 4500 cm−1 region through a combination of mass-selected infrared laser photodissociation spectroscopy and computational work including the effects of anharmonicity. In the reduced symmetry of the di-argon complex, …

us (code pays fourni par la source)

Measurement of rate constants for ion-ion reactions – O+ and N+ with the atomic halide anions Cl−, Br−, and I− at thermal energies

Jordan C. Sawyer, Kenneth Engeling, Brendan C. Sweeny, David C. McDonald et autres

us (code pays fourni par la source)

Role of Spin in the Catalytic Oxidation of CO by N2O Enabled by Co+: New Insights from Temperature-Dependent Kinetics and Statistical Modeling

David C. McDonald, Brendan C. Sweeny, Albert A. Viggiano, Nicholas S. Shuman et autres

The catalytic oxidation of CO by N 2 O promoted by Co + was studied as a function of temperature in a variable-ion source temperature-adjustable selected-ion flow tube (VISTA-SIFT). Each step of the cycle, Co + + N 2 O and CoO …

us (code pays fourni par la source)

Laboratory Development In Power Generation, Conversion, And Dissipation

Paul Duesing, David C. McDonald

The School of Engineering and Technology at

us (code pays fourni par la source)

Infrared spectroscopy of H+(CO)2 in the gas phase and in para -hydrogen matrices

Daniel Leicht, Brandon M. Rittgers, Gary E. Douberly, J. Philipp Wagner et autres

The H+(CO)2 and D+(CO)2 molecular ions were investigated by infrared spectroscopy in the gas phase and in para-hydrogen matrices. In the gas phase, ions were generated in a supersonic molecular beam by a pulsed electrical discharge. After extraction into a time-of-flight mass …

us, tw, jp (code pays fourni par la source)