Plasma temperature measurements from highly ionized titanium imploding wire plasmas

Electron temperature measurements in highly ionized titanium plasmas are reported. The plasmas were created by imploding cylindrical arrays of fine wires with the Blackjack 5 pulse generator (Peak diode voltage≊3.0 MV, peak current≊4.6 MA, peak power ≊10 TW at full operating level). Temperatures between 0.7 and 2.3 keV were obtained from the slope of the free-bound continuum. The results of these measurements are compared to temperature measurements obtained from the intensity ratio for the H-like (1s–2p)/He-like (1s2–1s3p1P) transitions. The line ratio method gave temperatures which ranged between 1.55 and 2.15 keV. Data are presented from eleven implosions at generator power levels between 5.2 and 7.5 TW.