J. Galy

Research Field

Selective excitation of xenon by multiphoton absorption of a dye laser beam gives, in the VUV, the emissions characteristic of this gas, i.e., the resonance line at 147 nm, the first continuum at 150 nm and the second continuum at 173 nm. The kinetic analysis of these emissions was carried out, using a correlation method, between 10−2 and 600 Torr. At low pressures the temporal variation of the density of the resonant 3P1 states allowed the resonance line trapping phenomenon to be demonstrated and the natural lifetime of these states to be determined (τn =4.3 ns). At high pressures the metastable 3P2 states are involved in the emission of the second continuum. The excitation spectra plotted for the blue satellite showed the creation of states in the 4f configuration. This phenomenon indicates that multiphoton ionization is not responsible for the creation of the metastable states. These states are created from a crossing of two molecular levels, one of which is bound (0+u) and responsible for the first continuum and the other of which is dissociative (2u) and correlated to the 3P2 state.

Metastability

Torr

Molecular beam

10.1063/1.446550

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Citations (54)

α-Bi4V2O10 crystal structure and oxidation mechanism. X-ray and electron diffraction analysis

Materials Research Bulletin (1999)

Christine Satto P. Millet P. Sciau C. Roucau J. Galy

10.1016/s0025-5408(99)00058-6

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Citations (17)

Contrôle de la rhéologie de PDMS linéaires chargés à la silice

EDP Sciences eBooks (2020)

J.N. Paquien J. Galy J.F. Gerard A. Pouchelon J.M. Pujol

10.1051/978-2-86883-770-7.c017

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Citations (0)

Organic and Organic-Inorganic Block Copolymers for Nanostructuration of Polymer Networks

HAL (Le Centre pour la Communication Scientifique Directe) (2011)

Jean‐François Gérard Julien Bernard Li-Xin Dai J. Galy Frédéric Lortie

Organic component

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Effect of coal on the rheological and mechanical properties of epoxy matrix

Macromolecular Symposia (2003)

L. Kurzeja Urszula Szeluga J. Galy Henry Sautereau Nathalie Issartel

Abstract An experimental study was conducted to investigate the effect of coal used as a new type of filler in epoxy networks. For this purpose two series of epoxy composites with different coal weight fraction were studied and their thermo‐mechanical properties were characterized. The work demonstrated that coal‐filled epoxy networks show a typical behavior of a particulate filled material and follows the theoretical models already used.

Filler (materials)

Matrix (chemical analysis)

10.1002/masy.200390079

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Citations (8)

Evaluation of the Bonding Quality in a Metal Composite Structure Using Lamb Waves

HAL (Le Centre pour la Communication Scientifique Directe) (2019)

Latifa Attar D. Leduc Mounsif Ech-Cherif El-Kettani Pascal Pareige Mihai Valentin Predoi

Lamb waves

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Nanostructured polymers from assembling hybrid organic/inorganic nanobuilding blocks

HAL (Le Centre pour la Communication Scientifique Directe) (2007)

Jean‐François Gérard Jean Galy

Source

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Crystal-Structure Data as a Tool for Interpreting LAXS (Large Angle X-ray Scattering) Studies of Amorphous Inorganic Compounds

Springer eBooks (1986)

A. Mosset J. Galy

Anomalous scattering

Crystal (programming language)

10.1007/978-1-4615-9477-2_20

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Excitation kinetic study of the N₂⁺(B²Σ_u⁺) state in Ne-N₂mixtures

Journal of Physics B Atomic and Molecular Physics (1977)

P. Millet Α. Βirot H. Brunet J. Galy J.L. Teyssier

The authors have studied the excitation of the B2 Sigma u+ state of N2+ by energy transfer from neon in Ne-N2 mixtures at total pressures of several hundred torr. The decay of the light pulse corresponding to the transition nu '=O, nu =O( lambda =391.4 nm) was reconstituted by means of the time-amplitude conversion method. The curves decrease exponentially. The variations of the decay time constant with the partial pressures of Ne and N2 enabled the kinetic scheme of the transfer process which uses Ne+ ions to be deduced.

10.1088/0022-3700/10/17/031

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Preferential crystallographic site substitution and oxygen migration in Bi2{Sr, Ca, Ln}3Cu2O8 related to rare earth ion size (Ln = La, Yb)

Journal of Solid State Chemistry (1991)

P. Millet O. Seeger R. Enjalbert J. Galy

Superstructure

Powder Diffraction

10.1016/0022-4596(91)90151-7

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Citations (4)