Demonstration of the First Visible Wavelength Direct Nuclear Pumped Laser. [He-Hg].

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  • Demonstration of the First Visible Wavelength Direct Nuclear Pumped Laser. [He-Hg]. Book Detail

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  • Release Date : 1976
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  • File Size : 76,76 MB
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Demonstration of the First Visible Wavelength Direct Nuclear Pumped Laser. [He-Hg]. by PDF Summary

Book Description: The first direct nuclear pumped laser to operate on a visible wavelength is described, whereas previous nuclear lasers have operated in the infrared. The Sandia Pulsed Reactor II was used as a high flux source of neutrons that pumped a helium-mercury gas laser via the high energy products of the /sup 10/B(n, .cap alpha.)/sup 7/Li nuclear reaction. No other source of energy was utilized. Lasing was observed at 6150 A, corresponding to the 7/sup 2/P/sub 3/2/--7/sup 2/S/sub /sup 1///sub 2// mercury ion transition. The thermal neutron flux threshold for lasing was approximately 1 x 10/sup 16/n/cm/sup 2/-sec, and the laser output was continuous over the 400 .mu.sec operating time of the nuclear reactor. The laser signal appeared to increase linearly with the thermal neutron flux, up to 5.8 x 10/sup 16/n/cm/sup 2/-sec, the highest flux used.

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