Branching reactions and chemical lasers

Basov, N G; Markin, E. P.; Никитин, А. В.; Oraevsky, Anatolii N

doi:10.1109/jqe.1970.1076420

Cited by 7 publications

(2 citation statements)

References 6 publications

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“…The residuals for the Gaussian fit are shown in the lower panel. Note that the residuals plot has no structure, indicating that no pressure-related line broadening or narrowing effects are evident' 5 ' 16. The spectral linewidth corresponds to T = 198 K.…”

Section: Resultsmentioning

confidence: 99%

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Tunable Diode Laser Gain Measurements of the HF(2-0) Overtone Transitions in a Small Scale HF Laser

Wisniewski

Manke

Hager

et al. 2002

33rd Plasmadynamics and Lasers Conference

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Section: Resultsmentioning

confidence: 99%

“…While the first HF lasers were pulse initiatede 5 , continuous wave HF lasers were also demonstrated prior to 19706s. Over the last 30 years, HF laser technology has advanced to the point where megawatt class lasers can be constructed.…”

Section: Introductionmentioning

confidence: 99%

Tunable Diode Laser Gain Measurements of the HF(2-0) Overtone Transitions in a Small Scale HF Laser

Wisniewski

Manke

Hager

et al. 2002

33rd Plasmadynamics and Lasers Conference

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Conceptual design of a 170-MJ hydrogen fluoride laser for fusion

Phipps

1989

Laser Part. Beams

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We have completed the conceptual design of a 170-MJ laser system consisting of two identical, opposing, 0-4M-litre, 84-MJ HF subsystems, which together deliver 105 'useful' MJ in 50 ns (FWHM duration) to a laser-fusion target during its hydrodynamic drive interval. We achieved extreme design simplicity by eliminating most optics, using an inexpensive, very-high-energy-density gain medium, propagating the laser beam at the maximum fluence permitted by optical breakdown in the laser medium, and by using replicated simple subsystems for pulsed power. The infrared spectrum of the HF laser lies outside the ultraviolet range favored by the U.S. laser fusion program for optimum target coupling efficiency. However, the laser architecture we describe is an alternative for laser fusion systems which offers dramatic improvements in simplicity, compactness, and efficiency, which advantages will be even more pronounced when equally efficient, visible-wavelength chemical lasers become available. Introduction: attractiveness of HF lasers for fusion at very high laser energyEarly discussions of realizing controlled thermonuclear reactions by laser-induced deuterium-tritium fusion were faced with the difficulty of achieving the required confinement quality (Lawson 1957) and ion temperatures of order 5keV (e.g., Miley 1976) with lasers whose energy was of order 1 kJ at most. The classical solution to the problem of small lasers (Brueckner 1969;Nuckolls et al. 1972) has been to produce a central shock (so-called 'central core ignition') momentarily capable of compressing the fuel to densities of order 10 4 times solid-state density, where ignition launches a self-sustained fusion combustion wave in the fuel pellet (see Cicchitelli et al. 1988). Using such complex schemes, it was possible to predict (Nuckolls et al. 1972) that only 1 kJ of laser energy could achieve a thermonuclear gain of 10 relative to the input laser energy, assuming central compression to 10 5 times liquid density.Subsequently, a long experimental history has culminated in the suggestion that inertially confined fusion [ICF] with modest gain may require laser energy in the 10-100 MJ range (Hora et al. 1989), while even the best results of the 100-kJ Nova laser are still nearly an order of magnitude away from the required confinement quality NT for ignition, let alone gain (Cicchitelli et al. 1988).Despite significant advances, the very high cost of laser technology still dominates the problem of ICF. The tremendous estimated costs for systems capable of modest gain make it crucial now to re-evaluate other laser technologies to see whether a reasonable alternative exists. We believe that efficient, short-pulse, electrically-initiated t Dedicated to the memory of Deva Pauline DeWitt Phipps. % On Professional Research and Teaching Leave from: Chemical and Laser Sciences Division, MS E543,

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Effect of H2 Pressure on Pulsed H2+F2 Laser. Experiment and Theory

Suchard

Kerber

Emanuel

et al. 1972

The Journal of Chemical Physics

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The Laboratory Operatiou of Tbe Aeroepace Corporatloale coa4uctlq uperime•al aod tbeoretlcallaveetliJ&tiODe nece .. •ry for the eval\l&tlOG u.d appUcatlon of edeatUlc .clYaac .. to~~-miUtary coac.r• aod eyeteau. Ver• .. tlUty aod flalblllty have been developed to a blah 4earea by tbe laboratory pere-1 ba deaUq wtth the maay problem•-coUDtere4 in the aatloa'• rapi41y 4evelopiq ept.ee aod miulle ayeteme. Elqlel'tlee bl the lateet ecleatlflc devel• opmeate Ia vital to the accompUahm•• at tub relate4 to theee problema. The la))oratoriea that coatriblrte to tble reeearch aret Aeroph~lca Laboratorxt LaUDch aod reentry aerodynamice, heat trau• far, reeatry Ydce, cliemlcalldnetlce, etrucharal mechalllce, fUpt dyumica, atmoepberic pollutlOIIo U4 hl1Jh•power 1u laeere. Chemlatrv aod Phyelce Laboratordt Atmotpheric reactlou u.d atmoe• pharic op&ca, cmcilreaC:U:oae lii po~ute4 atmotpher. . , chemical l'eacUOJle of asctte4 epedee la rocket pl-e, chemical thermoclyaamlce, plum.a u.d luer-iatv.ce4 reactloae, laeer chemietry, propweln cheml1try, epace •acuum u4 ratiatlOD effecte Oil materiale, lubrication u.d n rface pheaom.... photo• ••lltlve meteriala aod au1ore, hlah predelqsa laeer r&llflq, u.d tbe appU-catlOD of phyetce aod chemlatry to problema of law eaforcemetat aod lll~olae, Electroalea a .. earch LaboratOI'!I Electl'omaJaatlc theory, 4avicee, ... pro,.,atloa plieaomeaa, liicl\idliii pl .. ma electromeaaettce; quaatam electroalce, laeen, &ad electro-optlce; cOIIIIDUillcatloa ecl-cee, appUe4 electrollllce, aeml• coaductlq, aupercolldtactlaa, u.d cr,.tal devlce ]lh~lce, optical alld aewetlcal imaalal: atmoepheric pollution; milUmoter wave &ad far-blfrare4 tec!uaololf. W.teriale Sd-cea Laborato;J' Development of uw materiale; metal matrbl compoelt .. &Dd new lonna o cal"bon; teet &ad evaluatloa of IJr&pldte aod ceramic• ln re•try; epacecraft material• aA4 electroalc compollate ln nuclear weapOile envlrOilmeat; appUcation of fracture machaalce to atre .. cor• roelOil &JI4 fatlpe-laduce4 fracture• ln at~el metale. SptcG P~a Laborator~: Atmoapbel'lc aod iono•pberic pb~lce, ratllatlon from the ephen, d11111 ty aod compo•ltlon of the atmoephere, aiU'etl'&e aa4 alr1l-; mapetoepheric pbyelce, cetemic raye, aeneratlOD &ad prop&IJatlon of pleam.• wavel ln the ~.&IJiletoep~re; eolaz phyalce, etw!ie e of eolar m&IJI&tlc fte14a; tpue utronomy, x-ray aetrcmomy: the effect• of nuclear uploaiODa, meaaettc etorml, u.d eolar actlvlty on the earth'• atmolphere, l oooephere, aod JD81IIetoephere; the eftectl of optlcaJ.. electromaJaatlC, u.d pal'tlculete l'aclit• tlODe bl epace oa •epace eyeteme.

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Branching reactions and chemical lasers

Cited by 7 publications

References 6 publications

Tunable Diode Laser Gain Measurements of the HF(2-0) Overtone Transitions in a Small Scale HF Laser

Tunable Diode Laser Gain Measurements of the HF(2-0) Overtone Transitions in a Small Scale HF Laser

Conceptual design of a 170-MJ hydrogen fluoride laser for fusion

Effect of H2 Pressure on Pulsed H2+F2 Laser. Experiment and Theory

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