Accession Number : ADA267728


Title :   Sodium-Mercury Excimer Laser. Phase 1


Descriptive Note : Final rept. Jun-Dec 1992


Corporate Author : PLEX CORP BROOKLINE MA


Personal Author(s) : McGeoch, Malcolm W


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a267728.pdf


Report Date : Dec 1992


Pagination or Media Count : 42


Abstract : This Phase I work addresses the technology required to test the sodium-mercury excimer laser concept. Calculations of the optimum laser excitation conditions show that a gain of 2.8% /cm should be achievable in the 1.2 micron region for a specific discharge power input of 20kW/cu cm. At the lower power input of 2kW/cu cm the projected gain is 1.5%/cu cm. The calculations consider the electron energy distribution function and collisional dissociation of NaHg(A) state molecules. Ultraviolet pre-ionisation was shown to be a viable route to the attainment of high power discharges in this system. An experimental test of 600 deg C cell technology was performed, in which windows, lead-throughs and a close-out valve were cycled repeatedly to that temperature.. .. Laser, Excimer, Sodium, Mercury, Cell, Technology, Gain, Calculations.


Descriptors :   *EXCITATION , *SODIUM , *LASERS , *ELECTRON ENERGY , *MERCURY , *DISTRIBUTION FUNCTIONS , *COLLISIONS , *EXCIMERS , TEST AND EVALUATION , INPUT , IONIZATION , KINETICS , BOLTZMANN EQUATION , DISSOCIATION , VAPOR PRESSURE , VALVES , POWER , GAIN , ELECTRONIC STATES , PHASE , ENERGY , MOLECULES , CELLS


Subject Categories : Inorganic Chemistry
      Lasers and Masers
      Atomic and Molecular Physics and Spectroscopy


Distribution Statement : APPROVED FOR PUBLIC RELEASE