STATIONARY AFTERGLOW STUDY OF THE SINGLY CHARGED ATOMIC IONS IN PURE AR AND KR

1979 ◽  
Vol 40 (C7) ◽  
pp. C7-51-C7-52
Author(s):  
M. Grössl ◽  
H. Helm ◽  
M. Langenwalter ◽  
T.D. Märk
Keyword(s):  
Atomic Ions ◽  
Singly Charged

The combined use of a singly charged ion beam and undulator radiation for photoelectron spectrometry studies on atomic ions

1992 ◽  
Vol 63 (1) ◽  
pp. 1389-1392 ◽  
Author(s):  
J. M. Bizau ◽  
D. Cubaynes ◽  
M. Richter ◽  
F. Wuilleumier ◽  
J. Obert ◽  
...  
Keyword(s):  
Ion Beam ◽  
Undulator Radiation ◽  
Atomic Ions ◽  
Combined Use ◽  
Singly Charged

scholarly journals Measurements of Absolute Collisional Cross Sections at Harvard-Smithsonian CfA

1984 ◽  
Vol 86 ◽  
pp. 179-182
Author(s):  
J.L. Kohl ◽  
L.K. Deutsch ◽  
L.D. Gardner ◽  
G.P. Lafyatis ◽  
A.R. Young
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Research Program ◽  
Atomic System ◽  
Dielectronic Recombination ◽  
Bench Mark ◽  
Major Goal ◽  
Atomic Ions ◽  
Stark Mixing ◽  
Singly Charged

The major goal of this research program is to determine, experimentally, accurate absolute cross sections for dielectronic recombination (DR) in multiply and singly charged atomic ions. Our initial measurements of DR in C3+ are designed to provide a “bench mark” cross section for a simple atomic system. The experiment determines energy averaged DR cross sections for a well defined process involving a specific stabilizing transition. The fields in the region where dielectronic recombination occurs can be made small (≅ 0.25 V/cm) in order to minimize the effect of Stark mixing which is expected to enhance the DR process. We are presently adding the capability to apply known mixing fields up to 5 V/cm in the electron-ion interaction region of our apparatus.

scholarly journals Спектроскопия барьерного разряда низкого давления. Послесвечение с ионами Ne-=SUP=-2+-=/SUP=-, Ne-=SUP=-+-=/SUP=- и Ne-=SUP=-2+-=/SUP=-

2021 ◽  
Vol 129 (8) ◽  
pp. 992
Author(s):  
В.А. Иванов
Keyword(s):  
Photon Counting ◽  
Elementary Processes ◽  
Atomic Ions ◽  
Excited Atoms ◽  
Pulsed Heating ◽  
Temperature Relaxation ◽  
Singly Charged ◽  
Available Information ◽  
Spectral Intensities ◽  
Charged Ions

We present the results of modeling the radiation of a decaying plasma, formed by the processes of electron-ion recombination with the participation of three neon ions: the molecular ion Ne2+ and atomic ions Ne+ and Ne2+. Such a combination of ions, simultaneously participating in the formation of the plasma spectrum, was first discovered in the afterglow of a pulsed barrier discharge of a cylindrical geometry at neon pressures less than 1 Torr and an electron density[e] ≤ 4 × 1010 cm-3. The main attention is paid to the comparative analysis of the mechanisms of impact-radiation recombination of Ne+ and Ne2+ ions based on the numerical solution of the system of differential equations for the densities of ions and long-lived excited atoms in the afterglow, taking into account the main elementary processes in decaying plasma with pulsed "heating" of electrons. The regularities of electron temperature relaxation from discharge values of several electron volts to 300 K in the late afterglow are considered in particular details. Comparison of the model solutions with the spectral intensities measured by the multichannel photon counting method shows that, given their good agreement in the case of singly charged ions, an adequate description of the evolution of ionic lines requires expanding the available information on the recombination of Ne2+ ions.

A compact source for bunches of singly charged atomic ions

2016 ◽  
Vol 87 (4) ◽  
pp. 043302 ◽  
Author(s):  
T. Murböck ◽  
S. Schmidt ◽  
Z. Andelkovic ◽  
G. Birkl ◽  
W. Nörtershäuser ◽  
...  
Keyword(s):  
Atomic Ions ◽  
Compact Source ◽  
Singly Charged

Evidence of charge inversion in the reaction of singly charged anions with multiply charged macroions

1991 ◽  
Vol 95 (17) ◽  
pp. 6412-6415 ◽  
Author(s):  
Rachel R. Ogorzalek Loo ◽  
Harold R. Udseth ◽  
Richard D. Smith
Keyword(s):  
Charge Inversion ◽  
Multiply Charged ◽  
Singly Charged

scholarly journals The singly-charged scalar singlet as the origin of neutrino masses

2021 ◽  
Vol 2021 (5) ◽  
Author(s):  
Tobias Felkl ◽  
Juan Herrero-García ◽  
Michael A. Schmidt
Keyword(s):  
Mass Matrix ◽  
Boson Mass ◽  
Neutrino Masses ◽  
Charged Scalar ◽  
Yukawa Couplings ◽  
Left Handed ◽  
Flavour Violation ◽  
Singly Charged ◽  
Charged Lepton Sector ◽  
Scalar Singlet

Abstract We consider the generation of neutrino masses via a singly-charged scalar singlet. Under general assumptions we identify two distinct structures for the neutrino mass matrix. This yields a constraint for the antisymmetric Yukawa coupling of the singly-charged scalar singlet to two left-handed lepton doublets, irrespective of how the breaking of lepton-number conservation is achieved. The constraint disfavours large hierarchies among the Yukawa couplings. We study the implications for the phenomenology of lepton-flavour universality, measurements of the W-boson mass, flavour violation in the charged-lepton sector and decays of the singly-charged scalar singlet. We also discuss the parameter space that can address the Cabibbo Angle Anomaly.

scholarly journals Spectroscopic characterization of a thermodynamically stable doubly charged diatomic molecule: MgAr2+

2021 ◽  
Author(s):  
Dominik Wehrli ◽  
Matthieu Génévriez ◽  
Frédéric Merkt
Keyword(s):  
High Resolution ◽  
Diatomic Molecule ◽  
Spectroscopic Characterization ◽  
New Method ◽  
High Resolution Spectroscopy ◽  
Singly Charged ◽  
Doubly Charged

We present a new method to study doubly charged molecules relying on high-resolution spectroscopy of the singly charged parent cation, and report on the first spectroscopic characterization of a thermodynamically stable diatomic dication, MgAr2+.

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