Field-ionization threshold and its induced ionization-window phenomenon for Rydberg atoms in a short single-cycle pulse [PDF]
, 2014 We study the field-ionization threshold behavior when a Rydberg atom is ionized by a short single-cycle pulse field. Both hydrogen and sodium atoms are considered. The required threshold field amplitude is found to scale \emph{inversely} with the binding energy when the pulse duration becomes shorter than the classical Rydberg period, and, thus, more ...
Robicheaux, F., Yang, B. C.
arxiv +5 more sources
Shining A Light On Galactic Outflows: Photo-Ionized Outflows [PDF]
, 2016 We study the ionization structure of galactic outflows in 37 nearby, star forming galaxies with the Cosmic Origins Spectrograph on the Hubble Space Telescope. We use the O I, Si II, Si III, and Si IV ultraviolet absorption lines to characterize the different ionization states of outflowing gas. We measure the equivalent widths, line widths, and outflow
Chen, Yanmei +4 more
arxiv +3 more sources
Momentum-resolved study of the saturation intensity in multiple ionization [PDF]
Phys. Rev. A 91 (2015), 031401(R), 2014 We present a momentum-resolved study of strong field multiple ionization of ionic targets. Using a deconvolution method we are able to reconstruct the electron momenta from the ion momentum distributions after multiple ionization up to four sequential ionization steps.
Möller, M. +5 more
arxiv +3 more sources
Interplay between relativistic energy corrections and resonant excitations in x-ray multiphoton ionization dynamics of Xe atoms [PDF]
, 2017 In this paper, we theoretically study x-ray multiphoton ionization dynamics of heavy atoms taking into account relativistic and resonance effects. When an atom is exposed to an intense x-ray pulse generated by an x-ray free-electron laser (XFEL), it is ionized to a highly charged ion via a sequence of single-photon ionization and accompanying ...
Santra, Robin +2 more
arxiv +4 more sources
USE OF PAPER SPRAY-MASS SPECTROMETRY TO DETERMINE THE CHEMICAL PROFILE OF RIPE BANANA PEEL FLOUR AND EVALUATION OF ITS PHYSICOCHEMICAL AND ANTIOXIDANT PROPERTIES [PDF]
Química Nova, 2020 In this work, the peels of ripe banana (Musa sp.), variety “Prata”, were used to prepare a flour, which was evaluated for its physicochemical characteristics and antioxidant activity.
Viviane D. M. Silva +5 more
doaj +1 more source
Оптические характеристики термосферы и мезосферы
Vestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2022 Используя лидарные сигналы на длинах волн 561 и 532 нм в диапазоне высот 30-400 км, путем решения обратной задачи восстанавливаем коэффициенты рассеяния света, соответствующие этим длинам волн, что позволяет сравнить оптические характеристики термосферы,
Шевцов, Б.М. +2 more
doaj +1 more source
Optimizing ideal ion propulsion systems depending on the nature of the propellant [PDF]
INCAS Bulletin, 2016 From all accounts the ion thrusters are characterized by the fact that they produce a very high exhaust velocity and specific impulse, sometimes too high for many missions.
Grigore CICAN, Ionut-Florian POPA
doaj +1 more source
Using the first-order Born-Faddeev approximation in ionization channel [PDF]
Iranian Journal of Physics Research, 2020 In the present work, the triple and double differential cross sections of atomic hydrogen ionization in the collision with protons at intermediate and high energy ranges are calculated.
R Fathi, S Amiri
doaj +1 more source
Light Dark Matter Search with Ionization Signals in XENON1T. [PDF]
Physical Review Letters, 2019 We report constraints on light dark matter (DM) models using ionization signals in the XENON1T experiment. We mitigate backgrounds with strong event selections, rather than requiring a scintillation signal, leaving an effective exposure of (22±3) tonne ...
E. Aprile +132 more
semanticscholar +1 more source
Development of a multiwire position sensitive proportional counter [PDF]
Nuclear Technology and Radiation Protection, 2011 Preliminary measurements in a proportional counter with two independently counting wires have shown that counting rates up to 106 counts/s per wire can be reached without critical loss in the “true versus measured” linearity relation. In this paper, a
Kakavand Tayeb +3 more
doaj +1 more source