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Download Laser Lna De Puissance Application Au Pompage Optique De Lhelium 3 Et Des Melanges Helium 3 Helium 4 full books in PDF, epub, and Kindle. Read online Laser Lna De Puissance Application Au Pompage Optique De Lhelium 3 Et Des Melanges Helium 3 Helium 4 ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Author :
Publisher :
ISBN 13 :
Total Pages : 840 pages
Book Rating : 4.3/5 (91 download)
Download or read book JPIII written by and published by . This book was released on 1997 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : CHRISTIAN.. LARAT
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (49 download)
Download or read book LASER LNA DE PUISSANCE; APPLICATION AU POMPAGE OPTIQUE DE L'HELIUM-3 ET DES MELANGES HELIUM-3/HELIUM-4 written by CHRISTIAN.. LARAT and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: NOUS AVONS CHERCHE A AUGMENTER LES TAUX DE POLARISATION NUCLEAIRE DE L'HELIUM-3 OBTENUS PAR POMPAGE OPTIQUE. DANS CE BUT, NOUS AVONS TRAVAILLE SUIVANT DEUX DIRECTIONS: DEVELOPPEMENT D'UNE SOURCE LASER PUISSANTE A 1083 NM ET ETUDE DES CONDITIONS DE POMPAGE OPTIQUE. NOUS AVONS AINSI REALISE UNE SOURCE LASER A SOLIDE (LNA) EXCITEE PAR LAMPES QUI DELIVRE UNE PUISSANCE DE SORTIE ELEVEE (5W), ACCORDABLE SUR TOUTE LA STRUCTURE DE LA RAIE 2#3S-2#3P DE L'HELIUM AVEC UNE LARGEUR SPECTRALE BIEN ADAPTEE AU POMPAGE OPTIQUE. L'ACCORD EN FREQUENCE EST OBTENU PAR L'INTERMEDIAIRE DE DEUX ETALONS SOLIDES THERMOSTATES. NOUS AVONS DE MEME TESTE UN NOUVEAU MATERIAU LASER PROMETTEUR, LE LMA: CR, ND. NOUS AVONS EGALEMENT ETUDIE LES CARACTERISTIQUES DU POMPAGE A FORTE ET FAIBLE PUISSANCE LASER DANS L'HELIUM-3 PUR ET DANS LES MELANGES HELIUM-3/HELIUM-4. LES RESULTATS EXPERIMENTAUX ONT ETE CONFRONTES AUX RESULTATS NUMERIQUES D'UN MODELE QUE NOUS AVONS DEVELOPPE. NOUS AVONS AINSI OBTENU DES POLARISATIONS NUCLEAIRES DE L'HELIUM-3 JAMAIS ENCORE ENREGISTREES: SUPERIEURES A 85% EN POMPAGE OPTIQUE DANS L'HELIUM-3 PUR ET 80% DANS LES MELANGES. A FAIBLE PUISSANCE LASER (1 MW), LES TAUX DE POLARISATION NUCLEAIRE SONT PLUS ELEVES DANS LES MELANGES QUE DANS L'HELIUM-3 PUR A PRESSION TOTALE DONNEE
Author : Marion Batz
Publisher :
ISBN 13 :
Total Pages : 394 pages
Book Rating : 4.:/5 (794 download)
Download or read book Metastability Exchange Optical Pumping in _1hn3He Gas Up to 30 MT written by Marion Batz and published by . This book was released on 2011 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Helium-3 and Helium-4 Acceleration by High Power Laser Pulses for Hadron Therapy written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The laser driven acceleration of ions is considered a promising candidate for an ion source for hadron therapy of oncological diseases. Though proton and carbon ion sources are conventionally used for therapy, other light ions can also be utilized. Whereas carbon ions require 400 MeV per nucleon to reach the same penetration depth as 250 MeV protons, helium ions require only 250 MeV per nucleon, which is the lowest energy per nucleon among the light ions. This fact along with the larger biological damage to cancer cells achieved by helium ions, than that by protons, makes this species an interesting candidate for the laser driven ion source. Two mechanisms (Magnetic Vortex Acceleration and hole-boring Radiation Pressure Acceleration) of PW-class laser driven ion acceleration from liquid and gaseous helium targets are studied with the goal of producing 250 MeV per nucleon helium ion beams that meet the hadron therapy requirements. We show that He3 ions, having almost the same penetration depth as He4 with the same energy per nucleon, require less laser power to be accelerated to the required energy for the hadron therapy.
