Pressure effect on 6p-6s ir decay in xenon after two-photon excitation

Moutard, P.; Laporte, P.; Damany, N.; Subtil, J. L.; Damany, H.

doi:10.1016/0009-2614(86)87116-0

Cited by 28 publications

(13 citation statements)

References 16 publications

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“…Three-body collisions become important for the 1s 4 , 1s 5 [46] and 2p 5 [47] states already above 100 mbar. Due to their role as gateways for the VUV and IR excimer emission, the ensuing pathways are discussed separately in the next section.…”

Section: Atomic Cascadementioning

confidence: 99%

Microscopic simulation of xenon-based optical TPCs in the presence of molecular additives

Azevedo

González-Díaz

Biagi

et al. 2018

Nuclear Instruments and Methods in Physics Research Section A:

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We introduce a simulation framework for the transport of high and low energy electrons in xenon-based optical time projection chambers (OTPCs). The simulation relies on elementary cross sections (electron-atom and electron-molecule) and incorporates, in order to compute the gas scintillation, the reaction/quenching rates (atom-atom and atom-molecule) of the first 41 excited states of xenon and the relevant associated excimers, together with their radiative cascade. The results compare positively with observations made in pure xenon and its mixtures with CO2 and CF4 in a range of pressures from 0.1 to 10 bar. This work sheds some light on the elementary processes responsible for the primary and secondary xenon-scintillation mechanisms in the presence of additives, that are of interest to the OTPC technology.

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Section: Atomic Cascadementioning

confidence: 99%

Microscopic simulation of xenon-based optical TPCs in the presence of molecular additives

Azevedo

González-Díaz

Biagi

et al. 2018

Nuclear Instruments and Methods in Physics Research Section A:

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“…The two-body relaxation of the Xe(6p) states in Xe is rather well characterized, 11,16,17 and some information is available for Ne (Ref. 10) and Ar (Refs.…”

Section: Z or 2p6)' And Xe(6p[5/2]2 Or 2p9)mentioning

confidence: 99%

“…The very small two-body quenching rate constant for Xe(2ps) by Xe has been confirmed by a third independent study, and a threebody rate constant also was assigned. 17 In order to identify the primary product states that are associated with these TABLE I. Total quenching rate constants ( 10-II cm 3 atom -I S -').…”

Section: A Total Quenching Rate Constants For Xe(2p5)' Xe(2ps) and mentioning

confidence: 99%

Deactivation rate constants and product branching in collisions of the Xe(6p) states with Kr and Ar

Setser

1990

The Journal of Chemical Physics

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Laser induced fluorescence study of Xe(5p 56p, 5p 56p′, 5p 57p, and 5p 56d) states in Ne and Ar: Radiative lifetimes and collisional deactivation rate constants J. Chem. Phys. 81, 5760 (1984); 10.1063/1.447628 Radiative lifetimes and twobody collisional deactivation rate constants in Ar for Xe(5p 56p),Xe(5p 56p), and Xe(5p 57p) states J. Chem. Phys. 75, 1207 (1981); 10.1063/1.442169 Rate constants for the deactivation of O(1 D) by Xe, Kr, and Ar over the range 110-330 K The quenching kinetics of the Xe(6p[ 1/2]0)' Xe(6p[3/2b), and Xe(6p[5/2b) states havebeen studied in Kr and Ar buffer gas at room temperature using the two-photon, laserexcitation technique. The total quenching rate constants and the primary product distributions were measured to obtain state-to-state rate constants. Collisions between Xe [ 1/2] 0 and Kr mainly gave energy transfer to Kr( 5s,3 P2) rather than relaxation to the Xe( 6p or 5d) levels. The transfer of energy from Kr( 5s, 3 P 2 ) back to the Xe( 6p) manifold also was observed. The collisional coupling between Xe [ 1/2] 0 and Xe( 3d s ) in Ar, reported previously, was confirmed. The collisions ofKr and Ar with Xe[3/2b and Xe[5/2lz atoms gave intramultiplet relaxation; observation of the time dependence of the primary products, the Xe[ 3/2] I' [5/2] 3, and [1/2] I states, permitted assignment of some state-to-state rate constants for these states. The flow of energy through the Xe( 6p) manifold is discussed.

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“…Metastable atomic-and g molecular states are mainly studied because of their importance for VUV emission [20]. The kinetics of the processes leading to excimer formation and VUV emission has been clarified in spectral and time resolved experiments, in which lifetimes and rate constants are determined [1,7,11,12,13,18,21,22,23,24,25,26].…”

mentioning

confidence: 99%

“…The kinetics of the processes leading to excimer formation and VUV emission has been clarified in spectral and time resolved experiments, in which lifetimes and rate constants are determined [1,7,11,12,13,18,21,22,23,24,25,26].…”

mentioning

confidence: 99%

Infrared emission spectrum and potentials of 0⁺_uand 0⁺_gstates of Xe₂excimers produced by electron impact

Borghesani¹,

Carugno²,

Mogentale³

2007

J. Phys. B: At. Mol. Opt. Phys.

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We present an investigation of the Xe2 excimer emission spectrum observed in the near infrared range about 7800 cm −1 in pure Xe gas and in an Ar (90%) -Xe (10%) mixture and obtained by exciting the gas with energetic electrons. The Franck-Condon simulation of the spectrum shape suggests that emission stems from a bound-free molecular transition never studied before. The states involved are assigned as the bound (3)0 + u state with 6p [1/2]0 atomic limit and the dissociative (1)0 + g state with 6s [3/2]1 limit. Comparison with the spectrum simulated by using theoretical potentials shows that the dissociative one does not reproduce correctly the spectrum features.

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Pressure effect on 6p-6s ir decay in xenon after two-photon excitation

Cited by 28 publications

References 16 publications

Microscopic simulation of xenon-based optical TPCs in the presence of molecular additives

Microscopic simulation of xenon-based optical TPCs in the presence of molecular additives

Deactivation rate constants and product branching in collisions of the Xe(6p) states with Kr and Ar

Infrared emission spectrum and potentials of 0⁺_uand 0⁺_gstates of Xe₂excimers produced by electron impact

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Pressure effect on 6p-6s ir decay in xenon after two-photon excitation

Cited by 28 publications

References 16 publications

Microscopic simulation of xenon-based optical TPCs in the presence of molecular additives

Microscopic simulation of xenon-based optical TPCs in the presence of molecular additives

Deactivation rate constants and product branching in collisions of the Xe(6p) states with Kr and Ar

Infrared emission spectrum and potentials of 0+uand 0+gstates of Xe2excimers produced by electron impact

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Infrared emission spectrum and potentials of 0⁺_uand 0⁺_gstates of Xe₂excimers produced by electron impact