Perturbative and nonperturbative photoionization of H-2 and H2O using the molecular R-matrix-with-time method

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F20%3A10423677" target="_blank" >RIV/00216208:11320/20:10423677 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Ga-eM9smyz" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Ga-eM9smyz</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevA.102.052826" target="_blank" >10.1103/PhysRevA.102.052826</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Perturbative and nonperturbative photoionization of H-2 and H2O using the molecular R-matrix-with-time method

Popis výsledku v původním jazyce

The ab initio R-matrix with time method has recently been extended to allow simulation of fully nonperturbative multielectron processes in molecules driven by ultrashort arbitrarily polarized strong laser fields. Here we demonstrate the accuracy and capabilities of the current implementation of the method for two targets: We study single-photon and multiphoton ionization of H-2 and one-photon and strong-field ionization of H2O and compare the results to available experimental and theoretical data as well as our own time-independent R-matrix calculations. We obtain a highly accurate description of total and state-to-state single-photon ionization of H2O and, using a simplified coupled-channel model, we show that state coupling is essential to obtain qualitatively correct results and that its importance as a function of laser intensity changes. We find that electron correlation plays a more important role at low intensities (up to approximately 50 TW/cm(2)).

Název v anglickém jazyce

Perturbative and nonperturbative photoionization of H-2 and H2O using the molecular R-matrix-with-time method

Popis výsledku anglicky

The ab initio R-matrix with time method has recently been extended to allow simulation of fully nonperturbative multielectron processes in molecules driven by ultrashort arbitrarily polarized strong laser fields. Here we demonstrate the accuracy and capabilities of the current implementation of the method for two targets: We study single-photon and multiphoton ionization of H-2 and one-photon and strong-field ionization of H2O and compare the results to available experimental and theoretical data as well as our own time-independent R-matrix calculations. We obtain a highly accurate description of total and state-to-state single-photon ionization of H2O and, using a simplified coupled-channel model, we show that state coupling is essential to obtain qualitatively correct results and that its importance as a function of laser intensity changes. We find that electron correlation plays a more important role at low intensities (up to approximately 50 TW/cm(2)).

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10300 - Physical sciences

Projekt

<a href="/cs/project/GJ20-15548Y" target="_blank" >GJ20-15548Y: Nové mechanizmy požkození DNA působením elektronů a ultrafialového záření</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical Review A

ISSN

2469-9926

e-ISSN

—

Svazek periodika

102

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

14

Strana od-do

052826

Kód UT WoS článku

000591727600010

EID výsledku v databázi Scopus

2-s2.0-85096907972