Reflection from a CO2 laser produced plasma

Dyer, P. E.; James, D. J.; Ramsden, S.A.; Skipper, Mark

doi:10.1016/0375-9601(74)90518-0

Cited by 10 publications

(2 citation statements)

References 7 publications

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“…The emis sion spectrum covered the wavelength range 2.6 -3.Opm , the d istribution of energy in the various lines being as shown in Fi g 29. Maximum energy was obtained in the P 2 1band , the P 1 0 having a sim ilar but slig ht ly lowe r energy content .The relative distribution of energy in the P : P : P bands was 0.88 : 1: 0.26 which can be compared wi th a3÷2 2÷1 1÷0ca lculated distribution of 0.84 : 1 : 0.25 reported by 1-lough and Ke rber~3 5~ for the SF 5 -H 2 chemical laser .From time resolved measurements it was found tha t the P(3), P(4) and P(5) lines in the 2÷1 band oscillated fi rst , these lines being delaye d by ĩ 7Ons with respect to the start of the current pulse. The observation of earlies t lasing on the P 2÷1 band is consistent with the fact that the pumping reaction H 2 + F÷ HF + H selectively populated the V = 2 level of HF~3 4~.…”

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confidence: 49%

Interaction of Pulsed CO2 and Pulsed HF/DF Laser Radiation with Gaseous and Solid Targets.

Deka¹,

Dyer²,

James³

et al. 1977

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confidence: 49%

Interaction of Pulsed CO2 and Pulsed HF/DF Laser Radiation with Gaseous and Solid Targets.

Deka¹,

Dyer²,

James³

et al. 1977

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“…Investigations of partial energy balance and reflectivity have been reported by various workers [1][2][3][4][5][6][7][8][9][10][11][12][13], primarily in the non-linear regime of laser plasma interaction from monoatomic targets. Earlier workers [8,9] reported the measurements of reflectivity from plasmas produced from planar monoatomic targets in the laser intensity regime of 10 11 to 5 x 10 13 W/cm 2 .…”

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confidence: 99%

Reflectivity and energy balance in pulsed-laser deposition experiments from mono- and bi-atomic targets

2002

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Reflectivity and complete energy balance from the planar targets of aluminum, copper, nickel, and molybdenum have been measured using a Nd: glass laser (lambda=1060 nm,tau=5 ns) in the low intensity regime of laser plasma interaction as a function of focal spot size. The magnitude of partition of total incident laser energy into different channels is observed to decrease as the focal spot size increases. It is further observed that the magnitude of partition of the incident energy into these channels, in general, decreases as the atomic number increases for any given focal spot size, although, the reflectivity component of the partitioned energy increases with focal spot size for any given element. The reflectivities of copper and tungsten and their alloy were measured separately. The reflectivity from the alloy plasma was reduced by a factor of 6 compared to either element separately. This observation confirms the recent theory that in the multiion plasma the ion acoustic waves are additionally damped due to additional Joule, thermal diffusion, and viscous terms in the modified ion-fluid theory of the ion acoustic waves in a multiion species plasma.

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