TY - JOUR

T1 - Population and decay of the ArICl(ion-pair states) van der Waals complexes

AU - Порецкий, Сергей Артемович

AU - Правилов, Анатолий Михайлович

N1 - Publisher Copyright: © 2021 Informa UK Limited, trading as Taylor & Francis Group.

PY - 2021/7/25

Y1 - 2021/7/25

N2 - The article presents the analysis of the ArICl(IP,v IP,n IP) population and decay at energies lower than the ArICl(E,v E = 0,n E) dissociation limit (IP = E0 +, (Formula presented.), β1), v IP = 0, 1, n IP are quantum numbers of the van der Waals (vdW) modes). It shows that the ArICl(IP,v IP,n IP) lifetimes determined at spectral ranges where the ArICl(E→X, (Formula presented.), and β→A) luminescence takes place, are the same, τ = 20.3 ± 1.0 ns, i.e. strongly mixed complex states are populated in the ArICl(IP,v IP,n IP ← A,v A,n A) transitions, and principal channel of the complex decay is emission. We have estimated the ArICl(E0 +,v E = 0) binding energy and studied the ArICl(IP,v IP,n IP) population and decay at energies higher than the ArICl(E,v E = 0,n E) dissociation limit. Our research shows that the ArICl(IP,v IP,n IP) wave functions corresponding to specific n IP vdW mode depend on the mode, but they are approximately constant in some spectral ranges. The ArICl(IP,v IP,n IP) complex decays to free ICl(E0 +,v E, (Formula presented.) and β1,v β) molecules. We have determined the probabilities of these decay channels and shown that all the ICl(IP) states are mixed under the action of the Ar atom, i.e. this atom does not behave in the ArICl(IP,v IP,n IP) complexes as a ‘spectator’ as it occurs in the RgI 2(IP) states.

AB - The article presents the analysis of the ArICl(IP,v IP,n IP) population and decay at energies lower than the ArICl(E,v E = 0,n E) dissociation limit (IP = E0 +, (Formula presented.), β1), v IP = 0, 1, n IP are quantum numbers of the van der Waals (vdW) modes). It shows that the ArICl(IP,v IP,n IP) lifetimes determined at spectral ranges where the ArICl(E→X, (Formula presented.), and β→A) luminescence takes place, are the same, τ = 20.3 ± 1.0 ns, i.e. strongly mixed complex states are populated in the ArICl(IP,v IP,n IP ← A,v A,n A) transitions, and principal channel of the complex decay is emission. We have estimated the ArICl(E0 +,v E = 0) binding energy and studied the ArICl(IP,v IP,n IP) population and decay at energies higher than the ArICl(E,v E = 0,n E) dissociation limit. Our research shows that the ArICl(IP,v IP,n IP) wave functions corresponding to specific n IP vdW mode depend on the mode, but they are approximately constant in some spectral ranges. The ArICl(IP,v IP,n IP) complex decays to free ICl(E0 +,v E, (Formula presented.) and β1,v β) molecules. We have determined the probabilities of these decay channels and shown that all the ICl(IP) states are mixed under the action of the Ar atom, i.e. this atom does not behave in the ArICl(IP,v IP,n IP) complexes as a ‘spectator’ as it occurs in the RgI 2(IP) states.

KW - decay

KW - luminescence

KW - supersonic molecular beam

KW - two-step laser excitation

KW - van der Waals complexes

KW - VIBRATIONAL PREDISSOCIATION

KW - BINDING-ENERGIES

KW - PLUS ICL INTERACTIONS

KW - AR-CENTER-DOT-CENTER-DOT-CENTER-DOT-I-2

KW - ION-PAIR STATES

KW - A-STATE

KW - SPECTROSCOPY

KW - DOUBLE-RESONANCE

KW - DYNAMICS

KW - SPECTRUM

UR - http://www.scopus.com/inward/record.url?scp=85111438344&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/91286d4e-011f-3df4-bf58-89174084f6a1/

U2 - 10.1080/00268976.2021.1955166

DO - 10.1080/00268976.2021.1955166

M3 - Article

VL - 119

JO - Molecular Physics

JF - Molecular Physics

SN - 0026-8976

M1 - e1955166

ER -