Accession Number : ADA198147

Title :   Structure Dynamics of Excited Atoms.

Descriptive Note : Final technical rept. 1 Oct 86-30 Sep 88,


Personal Author(s) : Gallagher, T F

PDF Url : ADA198147

Report Date : 28 Mar 1988

Pagination or Media Count : 3

Abstract : The instrumentation grant was used to acquired three types of equipment. First we have purchased a high repetition rate Lambda-Physik eximer laser which we are using to pump several dye lasers. The eximer laser is particularly attractive as a pump laser for blue dye lasers. The eximer laser has been in constant use since June 1987, and we are now trying to improve our dye lasers to allow them to run at the 100 Hz repetition rate of the eximer laser. The second major category of equipment we have purchased is radio frequency and microwave equipment. We have acquired a new Hewlett Packard (HP) sweep oscillator to replace our existing oscillator which is now 15 years old. Specifically we have purchased and HP 8350 mainframe and plug-in units to cover the ranges 2-8, 8-18, and 18-25 GHz. These are entirely solid state devices which can, if need be, be phase locked to an external crystal controlled counter. The third kind of equipment is signal acquisition and averaging equipment. Specifically we have bought a fast 350 MHz Tektronix oscilloscope for diagnosing fast signals, especially photoelectron signals, and a 150 MHz digitizing, averaging oscilloscope which enables us to record time resolved data in a particularly efficient fashion. One can record the entire time resolved signal after each laser shot, raising the effective data collection efficiency by a factor of fifty relative to using a boxcar averager as we now do. (JHD)


Subject Categories : Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE