TY - JOUR
T1 - On stabilization of gas puff implosion
T2 - experiment and simulation
AU - Baksht, Rina B.
AU - Fedunin, Anatoliy V.
AU - Labetsky, Aleksey Yu
AU - Russkikh, Alexander G.
AU - Shishlov, Alexander V.
AU - Diyankov, Oleg V.
AU - Glazyrin, Igor V.
AU - Koshelev, Serge V.
PY - 1998/12/1
Y1 - 1998/12/1
N2 - A double gas puff was used to study the mitigation of the magneto-Rayleigh-Taylor (RT) instabilities for long implosion times (up to 250 ns). The experiments have been performed on the inductive storage GIT-4 (1.7 MA, 120 ns) generator. Current division between the outer and inner shells was controlled using magnetron-discharge preionization. The implosion of the a double gas puff, with the improved preionization, results in the formation of a uniform plasma column. The results of two-dimensional (2-D) radiation-magnetohydrodynamic simulations support the experimental results: a double gas puff implosion mitigates the RT instabilities, leading to the development of only small-amplitude waves. The 2-D simulation allowed us to explain the halo effect seen in the experiments: the use of the low hybrid conductivity in the calculation demonstrated the existence of the high density plasma core surrounded by a low density plasma halo.
AB - A double gas puff was used to study the mitigation of the magneto-Rayleigh-Taylor (RT) instabilities for long implosion times (up to 250 ns). The experiments have been performed on the inductive storage GIT-4 (1.7 MA, 120 ns) generator. Current division between the outer and inner shells was controlled using magnetron-discharge preionization. The implosion of the a double gas puff, with the improved preionization, results in the formation of a uniform plasma column. The results of two-dimensional (2-D) radiation-magnetohydrodynamic simulations support the experimental results: a double gas puff implosion mitigates the RT instabilities, leading to the development of only small-amplitude waves. The 2-D simulation allowed us to explain the halo effect seen in the experiments: the use of the low hybrid conductivity in the calculation demonstrated the existence of the high density plasma core surrounded by a low density plasma halo.
KW - Plasma radiation sources
KW - Plasma stability
UR - http://www.scopus.com/inward/record.url?scp=0032141503&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0032141503&partnerID=8YFLogxK
U2 - 10.1109/27.725158
DO - 10.1109/27.725158
M3 - Article
AN - SCOPUS:0032141503
VL - 26
SP - 1259
EP - 1266
JO - IEEE Transactions on Plasma Science
JF - IEEE Transactions on Plasma Science
SN - 0093-3813
IS - 4
ER -