Formation of mixed clusters in a pulsed supersonic helium-oxygen-isoprene jet

Zarvin, A. E.; Korobeishchikov, N. G.; Kalyada, V. V.; Madirbaev, V. Zh.

doi:10.1140/epjd/e2008-00146-7

Cited by 17 publications

(4 citation statements)

References 20 publications

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“…The stagnation pressure P 0 varying from 1 kPa before 10 3 kPa. The measurements were performed by means of a molecular beam mass-spectrometer method [11][12].…”

Section: Methodsmentioning

confidence: 99%

Pulsed Gas Jets for Formation of High-Intensity Cluster Beams

Korobeishchikov¹,

Zarvin²,

Kalyada³

et al. 2012

AMPC

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The possibility of using of pulsed supersonic gas jets for the formation of high intensity cluster ion beams are discusses. The results of experimental investigations of pulsed gases expansion are generalized in terms of dimensionless similarity parameters. The results of the experimental study of formation of an high-intensity cluster beam of argon are presented. The fundamental phenomenon influences on the main parameters of cluster beam (cluster size, intensity ect.) are considered.

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“…The stagnation pressure P 0 varying from 1 kPa before 10 3 kPa. The measurements were performed by means of a molecular beam mass-spectrometer method [11][12].…”

Section: Methodsmentioning

confidence: 99%

Pulsed Gas Jets for Formation of High-Intensity Cluster Beams

Korobeishchikov¹,

Zarvin²,

Kalyada³

et al. 2012

AMPC

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“…For ease of comparison, the amplitudes of all mass peaks are normalized to the mass of the stable isoprenyl ion C5H7 + (m/e = 67). The most probable reasons for the changes in the mass spectra at different concentrations of oxygen and isoprene, which are caused by the process of P0=80 kPa Isoprene condensation in a supersonic flow, have been established [30]. It was found that at the maximum concentration of isoprene (0.3%), binary oxygenisoprene complexes are not formed due to the intense condensation of isoprene.…”

Section: Formation Of Mixed Van Der Waals Oxygenisoprene Complexes In...mentioning

confidence: 99%

Modeling supersonic rarefied jets on experimental cluster at Novosibirsk State University

Zarvin,

Dubrovin,

Kalyada

et al. 2023

E3S Web Conf.

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A review of the experimental work carried out on the vacuum gas-dynamic stands of the Applied Physics Department of the Novosibirsk State University is presented. Creation of these stands meeting the world’s requirements and equipped with modern diagnostic methods was based on the background experience from the Institute of Thermophysics of the Siberian Branch of the Russian Academy of Sciences under the guidance of A.K. Rebrov. A brief description of the stands and the results of some studies is given. Despite the limited possibilities of the university environment, the use of compact laboratory vacuum stands provides large-scale studies in various areas of rarefied gas dynamics.

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“…(a) In a number of studies, it has been reported that cluster concentration in the jet increases with increasing backing pressure as has been observed for monatomic expansions. 47,49,50 (b) In a seeded jet, the relationship between reservoir temperature and seed molecule dimer formation is complicated and depends at least on two competing factors:z (i) The partial pressure of the monomer, which increases non-linearly with T 0 . (ii) The temperature of the jet molecules, at the point of excitation, which increases linearly with T 0 .…”

Section: Van Der Waals Complexes With Carrier Gas or Impuritiesmentioning

confidence: 99%

Fluorescence excitation and excited state intramolecular proton transfer of jet-cooled naphthol derivatives: part 2. 2-Hydroxy–1-naphthaldehyde

McCarthy

Ruth

2011

Phys. Chem. Chem. Phys.

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The S(1)← S(0) fluorescence excitation spectrum of jet-cooled 2-hydroxy-1-naphthaldehyde (2H1N) with origin at 26,668 cm(-1) has been measured. Nine totally symmetric modes and three non-totally symmetric modes have been assigned in the excitation spectrum. Ab initio calculations indicate that 2H1N undergoes a planarity change upon excitation, which may account for the unusual intensity of non totally symmetric vibrational modes in the excitation spectrum. A number of low intensity features were observed on the low energy side of the origin which have been assigned to the 2H1N dimer rather than different ground state confomers of 2H1N. The origin of the S(1)← S(0) electronic transition of the dimer lies at ~26,401 cm(-1); combinations of two low frequency intermolecular modes of the dimer (59 cm(-1) and 17 cm(-1)) were also observed. The occurrence of excited state intramolecular proton transfer (ESIPT) in 2H1N cannot be proven on the basis of this work. A comparison of the (photo)physical properties of 2H1N with 1-hydroxy-2-naphthaldehyde (1H2N) [A. McCarthy and A.A. Ruth, PCCP, 2011, 13, 7485-7499 (Part 1)], however, indicate the plausibility of an ESIPT process in 2H1N. The strength of the intramolecular hydrogen bond (IMHB) in 2H1N was computed as ~10.6 kcal/mol, a value comparable to the IMHB strength of 1H2N. The establishment of a lower limit on the state lifetimes of 2H1N, of ~1.8 ps, indicates that any proposed ESIPT reaction in 2H1N may not proceed barrierlessly. Above an excess energy of ~1000 cm(-1), the intensity of the fluorescence excitation spectrum reduces significantly, indicating the onset of a non-radiative decay mechanism.

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Formation of mixed clusters in a pulsed supersonic helium-oxygen-isoprene jet

Cited by 17 publications

References 20 publications

Pulsed Gas Jets for Formation of High-Intensity Cluster Beams

Pulsed Gas Jets for Formation of High-Intensity Cluster Beams

Modeling supersonic rarefied jets on experimental cluster at Novosibirsk State University

Fluorescence excitation and excited state intramolecular proton transfer of jet-cooled naphthol derivatives: part 2. 2-Hydroxy–1-naphthaldehyde

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