Open AccessInfluence of static vacuum on the preparation of cluster of supersonic gas jet
Author(s) -
Long Wang,
Guo Er-Fu,
Jifeng Han,
Jianbo Liu,
Yongqing Li,
Zhou Rong,
Chaowen Yang
Publication year - 2014
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.63.203601
Subject(s) - supersonic speed , cluster (spacecraft) , nozzle , argon , jet (fluid) , materials science , atomic physics , hydrogen , range (aeronautics) , limiting , ultra high vacuum , physics , mechanics , nanotechnology , thermodynamics , composite material , computer science , engineering , programming language , mechanical engineering , quantum mechanics
The influence of static vacuum on the cluster size and density of the supersonic gas jet is studied by Raleigh scattering method. It is found that in a range from 3×10-4 Pa to 9.9×104 Pa, the static vacuum has very little influence on the cluster size and desnity. The self-limiting effect which was found for hydrogen cluster at liquid nitrogen temperature is also found for argon cluster at positions far from the nozzle, and it is found to play an important role in the cluster generation and transporation. The result is very valuable for the construction of the desktop neutron source based on laser fusion method, since the pumps and device to supply the vacuum can be reduced and simplified.