The Veeco MBE Valved Cracker for Sulfur offers convenience and control unrivaled by any standard source. The large capacity refractory metal crucible is heated to generate a sulfur beam flux (consisting of Sn where n=8,7,6,5,3,2). Gas flow is regulated through a refractory metal needle valve into an independently heated cracking zone. The temperature of the cracking zone may be adjusted to generate either uncracked sulfur flux or a beam of smaller sulfur species. The cracking zone is constructed of quartz rather than a refractory metal due to sulfur’s corrosive nature.
With recent enhancements, the Mark V Valved Cracker for Sulfur incorporates a nozzle that provides excellent flux uniformity and reduced material waste. This improvement in material utilization results in:
A Veeco SMC-II Automated Valve Positioner is recommended for use with this source for reliable, automated control of the needle valve.