Results
author = "Vernhet, Dominique"
PHYSICAL PARAMETER DEPENDENCE OF THE X-RAY GENERATION IN INTENSE LASER – CLUSTER INTERACTION
Description :
Studies on laser – cluster interaction performed on the LUCA facility (French acronym for Ultra Short Tunable Laser, CEA Saclay) allow to observe the production of hard x-rays in the 1 to 5 keV range when rare gas clusters of nanometer sizes are heated by strong optical fields (F > 10^9 V/cm). First...
Repository :
HAL - Hyper Article on Line
Language(s) :
English
Production and transport of long lifetime excited states in pre-equilibrium ion solid collisions
Description :
A complete experimental study on the production and transport of long lifetime excited states has been done for Ar18+ on solid C targets, at a velocity of 23 a.u. and for a range of thickness allowing to vary the transport conditions from single collision to equilibrium (3.5 to 201 µg/cm2). A system...
Repository :
HAL - Hyper Article on Line
Language(s) :
English
X-ray production in short laser pulse interaction with rare gas clusters
Description :
Absolute keV x-ray measurements have been performed with nanometer size rare gas clusters submitted to femtosecond IR laser pulses at intensities I <1017 W cm-2. Special care has been taken in the measurements, by controlling the different parameters, which play a role in laser-cluster dynamics, i.e...
Repository :
HAL - Hyper Article on Line
Language(s) :
English
2E1 Ar17+ decay and conventional radioactive sources to determine efficiency of semiconductor detectors
Author(s) :
Lamour, Emily
,
Prigent, Christophe
,
Eberhardt, Benjamin
,
Rozet, Jean-Pierre
,
Vernhet, Dominique
Description :
Although reliable models may predict the detection efficiency of semiconductor detectors, measurements are needed to check the parameters supplied by the manufacturers namely the thicknesses of dead layer, beryllium window and crystal active area. The efficiency of three silicon detectors has been p...
Repository :
HAL - Hyper Article on Line
Language(s) :
English
2E1 Ar17+ decay and conventional radioactive sources to determine efficiency of semiconductor detectors
Author(s) :
Lamour, Emily
,
Prigent, Christophe
,
Eberhardt, Benjamin
,
Rozet, Jean-Pierre
,
Vernhet, Dominique
Description :
Although reliable models may predict the detection efficiency of
semiconductor detectors, measurements are needed to check the parameters
supplied by the manufacturers namely the thicknesses of dead layer, beryllium
window and crystal active area. The efficiency of three silicon detectors has
been...
Repository :
arXiv
Language(s) :
Undetermined
Source X par agrégats : contrôle et optimisation des paramètres gouvernant línteraction laser de puissance - agrégats de gaz rare
Author(s) :
Lamour, Emily
,
Prigent, Christophe
,
Rozet, Jean-Pierre
,
Vernhet, Dominique
,
Gobert, Olivier
,
Meynadier, Pierre
Description :
Les expériences que nous avons réalisées sur le Laser Ultra Court Accordable du CEA Saclay permettent dóbserver l\'émission de photons X dans la gamme 1-5 keV lors de lírradiation dágrégats de gaz rare (Ar, Kr et Xe comprenant entre 10^3 et 10^6 atomes par agrégat) avec un laser femtoseconde de puis...
Repository :
HAL - Hyper Article on Line
Language(s) :
French
Effect of pulse duration on the x-ray emission from Ar clusters in intense laser fields
Author(s) :
Prigent, Christophe
,
Lamour, Emily
,
Rozet, Jean-Pierre
,
Vernhet, Dominique
,
Deiss, Cornelia
,
Burgdörfer, Joachim
Description :
We study experimentally and theoretically the production of characteristic Ka x-rays during the interaction of intense infrared laser pulse with large N~10^4-10^6 atoms/ argon clusters. We focus on the influence of laser intensity and pulse length on both the total x-ray yields and the charge-state ...
Repository :
HAL - Hyper Article on Line
Language(s) :
English
Effect of pulse duration on the x-ray emission from Ar clusters in intense laser fields
Author(s) :
Prigent, Christophe
,
Lamour, Emily
,
Rozet, Jean-Pierre
,
Vernhet, Dominique
,
Deiss, Cornelia
,
Burgdörfer, Joachim
Description :
We study experimentally and theoretically the production of characteristic Ka
x-rays during the interaction of intense infrared laser pulse with large
N~10^4-10^6 atoms/ argon clusters. We focus on the influence of laser intensity
and pulse length on both the total x-ray yields and the charge-stat...
Repository :
arXiv
Language(s) :
Undetermined
Xe(L) x-ray emission from laser-cluster interaction
Author(s) :
Adoui, Lamri
,
Gobert, Olivier
,
Indelicato, Paul
,
Lamour, Emily
,
Meynadier, Pierre
,
Normand, Didier
,
Perdrix, M.
,
Prigent, Christophe
Description :
We have measured absolute L x-ray emission yields from (Xe)n clusters (with n in the range 10^5 – 10^7 atoms/cluster) irradiated by 60 femtoseconds 800 nm IR and 160 femtoseconds 400 nm UV laser pulses of 10^15 – 10^17 W cm-2 peak intensity. Measurements have been performed as a function of cluster ...
Repository :
HAL - Hyper Article on Line
Language(s) :
English
Dynamique sub-picoseconde de l'interaction laser de puissance – agrégats de gaz rare : émission intense de rayons X et production d'ions multichargés.
Author(s) :
Prigent, Christophe
,
Adoui, Lamri
,
Dreuil, S.
,
Gauthier, J.-C.
,
Gobert, Olivier
,
Lamour, Emily
,
Meynadier, Pierre
Description :
Lors de campagnes d'expériences réalisées sur le Laser Ultra Court Accordable du CEA/Saclay, nous avons étudié le rayonnement X, tant qualitativement (spectroscopie et énergie moyenne des photons) que quantitativement (taux absolus et lois d'évolution), émis lors de l'interaction d'un jet effusif d'...
Repository :
HAL - Hyper Article on Line
Language(s) :
French