Mega-ampere nanosecond current switching from external unstable light liner to inner load in vacuum on Angara-5-1

We made some experiments on "Angara-5-l" (2-3 MA, 100 ns) [1], using low linear mass liner (10-40 iukg/cm ) as a part of double Z-pinch. The low mass liner surrounded coaxially a cylindrical load of higher mass (100-200 mkg/cin). Current instability and poor compression of the low mass liner were specific features of that inhoinogeneous Z-pinch. We registered '-0.5 TW pulse of soft X-ray radiation from inner load in the instability moment. We treat the effect as a Plasma Opening Switch (P05) process in external current shell of double pinch.