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Julio César Valenzuela Ahumada

profesor asistente

Pontificia Universidad Católica de Chile

Santiago, Chile

plasma physics, nuclear fusion, Z-pinches, Z-pinch stability, Gas-puffs, wire arrays, high energy density physics, laboratory astrophysics, spectroscopy, pulsed power, plasma diagnostics

física, PONTIFICIA UNIVERSIDAD CATOLICA DE CHILE. Chile, 2012
física, PONTIFICIA UNIVERSIDAD CATOLICA DE CHILE. Chile, 2007

profesor asistente Full Time

PONTIFICIA UNIVERSIDAD CATOLICA DE CHILE

Física

Santiago, Chile

2018 - At present

Postdoc Full Time

University of California San Diego

San Diego, Estados Unidos

2012 - 2015
Assistant Scientist Full Time

University of California San Diego

San Diego, Estados Unidos

2015 - 2018


Bayesian inference of plasma parameters from collective Thomson scattering technique on a gas-puff near stagnation Escalona, M.; Valenzuela, J. C.; Avaria, G.; Veloso, F.; Wyndham, E. S. Article ISI SCIENTIFIC REPORTS (2023)
Comparison of round and knife-edge-like cathodes on gas-puff implosions Valenzuela, J. C.; Escalona, M.; Loch, O.; Veloso, F.; Diaz, J. P. Article ISI PHYSICAL REVIEW E (2023)
Measurements of Neutrons Created in a Staged Z-Pinch With Krypton Liner and Deuterium Target at a 1-MA Pulsed Power Generator Ruskov, E.; Rahman, H. U.; CONTI, F.; Valenzuela, J. C.; Aybar, N.; Beg, F. N. Article IEEE TRANSACTIONS ON PLASMA SCIENCE (2023)
Shock interactions between plasma jets from conical wire array Z-pinches and laser-produced plasma plume Izquierdo, Luisa; Veloso, Felipe; Valenzuela, Julio; Escalona, Miguel; Oportus, Diego; Favre, Mario Article ISI RESULTS IN PHYSICS (2022)
Comparative study on the dynamics and the composition between a pulsed laser deposition (PLD) and a plasma enhanced PLD (PE-PLD) Escalona, M.; Bhuyan, H.; Valenzuela, J. C.; Ibacache, S.; Wyndham, E.; Favre, M.; Veloso, F.; Ruiz, H. M.; Wagenaars, E. Article ISI RESULTS IN PHYSICS (2021)
Study of titanium nitride film growth by plasma enhanced pulsed laser deposition at different experimental conditions Escalona, M.; Bhuyan, H.; Ibacache, S.; Retamal, M. J.; Saikia, P.; Borgohain, C.; Valenzuela, J. C.; Veloso, F.; Favre, M.; Wyndham, E. Article ISI SURFACE & COATINGS TECHNOLOGY (2021)
X-ray emission from copper X-pinches driven at a current rate of ∼1kA/ns Vescovi, Milenko; Veloso, Felipe; Valenzuela, Julio; Favre, Mario Article ISI RESULTS IN PHYSICS (2021)
Design of a Multiple Exploding Wire Setup to Study Shock Wave Dynamics Mellor, W.; Lakhani, E.; Valenzuela, J. C.; Lawlor, B.; Zanteson, J.; Eliasson, V. Article ISI EXPERIMENTAL TECHNIQUES (2020)
MA-class linear transformer driver for Z-pinch research Conti, F.; Valenzuela, J. C.; Fadeev, V; Aybar, N.; Reisman, D. B.; Williams, A.; Collins, G.; Narkis, J.; Ross, M. P.; Beg, F. N.; Spielman, R. B. Article ISI PHYSICAL REVIEW ACCELERATORS AND BEAMS (2020)
Role of collisionality and radiative cooling in supersonic plasma jet collisions of different materials Collins, G. W.; Valenzuela, J. C.; Speliotopoulos, C. A.; Aybar, N.; Conti, F.; Beg, F. N.; Tzeferacos, P.; Khiar, B.; Bott, A. F. A.; Gregori, G. Article ISI PHYSICAL REVIEW E (2020)
Study of stability in a liner-on-target gas puff Z-pinch as a function of pre-embedded axial magnetic field Conti F.; Aybar N.; Narkis J.; Valenzuela, J.C.; Rahman H.U.; Ruskov E.; Dutra E.; Haque S.; Covington A.; Beg, F. N. Article ISI SCOPUS PHYSICS OF PLASMAS (2020)
A semi-analytic model of gas-puff liner-on-target magneto-inertial fusion Narkis, J.; Rahman, H. U.; Valenzuela, J. C.; Conti, F.; McBride, R. D.; Venosa, D.; Beg, F. N. Article ISI PHYSICS OF PLASMAS (2019)
Ar and Kr on deuterium gas-puff staged Z-pinch implosions on a 1-MA driver: Experiment and simulation Rahman, H. U.; Ruskov, E.; Ney, P.; Conti, F.; Valenzuela, J. C.; Aybar, N.; Narkis, J.; Beg, F. N.; Dutra, E.; Covington, A. Article ISI PHYSICS OF PLASMAS (2019)
Gated liquid scintillator detector for neutron time of flight measurements in a gas-puff Z-pinch experiment Ruskov, E.; Glebov, V. Yu.; Darling, T. W.; Wessel, F. J.; Conti, F.; Valenzuela, J. C.; Rahman, H. U.; Beg, F. N. Article ISI REVIEW OF SCIENTIFIC INSTRUMENTS (2019)
Characterization of a Liner-on-Target Gas Injector for Staged Z-Pinch Experiments Conti, F.; Valenzuela, J. C.; Aybar, N.; Wessel, F. J.; Ross, M. P.; Narkis, J.; Rahman, H. U.; Ruskov, E.; Beg, F. N. Article ISI IEEE TRANSACTIONS ON PLASMA SCIENCE (2018)
Measurement of temperature and density using non-collective X-ray Thomson scattering in pulsed power produced warm dense plasmas Valenzuela, J. C.; Krauland, C.; Mariscal, D.; Krasheninnikov, I.; Niemann, C.; Ma, T.; Mabey, P.; Gregori, G.; Wiewior, P.; Covington, A. M.; Beg, F. N. Article ISI SCIENTIFIC REPORTS (2018)
Injector design for liner-on-target gas-puff experiments Valenzuela, J. C.; Krasheninnikov, I.; Conti, F.; Wessel, F.; Fadeev, V.; Narkis, J.; Ross, M. P.; Rahman, H. U.; Ruskov, E.; Beg, F. N. Article ISI REVIEW OF SCIENTIFIC INSTRUMENTS (2017)
Characterization of laser-cut copper foil X-pinches Collins, G. W.; Valenzuela, J. C.; Hansen, S. B.; Wei, M. S.; Reed, C. T.; Forsman, A. C.; Beg, F. N. Article ISI PHYSICS OF PLASMAS (2016)
Shock formation in Ne, Ar, Kr, and Xe on deuterium gas puff implosions Narkis, J.; Rahman, H. U.; Ney, P.; Desjarlais, M. P.; Wessel, F. J.; Conti, F.; Valenzuela, J. C.; Beg, F. N. Article ISI PHYSICS OF PLASMAS (2016)
Counter-propagating plasma jet collision and shock formation on a compact current driver Valenzuela, J.C.; Collins, G.W.; Zick, T.; Narkis, J.; Krasheninnikov, I.; Beg, F.N. Article High Energy Density Physics (2015)
Investigation of Current Transport in 2 x 2 Wire Array Plasmas Mariscal, Derek; Valenzuela, Julio; Collins, Gilbert; Chittenden, Jeremy; Beg, Farhat Article ISI IEEE TRANSACTIONS ON PLASMA SCIENCE (2015)
Time-resolved study of the extreme-ultraviolet emission and plasma dynamics of a sub-Joule, fast capillary discharge Valenzuela, JC; Wyndham, ES; Favre, M. Article ISI SCOPUS Physics of Plasmas (2015)
Measurement of pulsed-power-driven magnetic fields via proton deflectometry Mariscal, D.; McGuffey, C.; Valenzuela, J.; Wei, M. S.; Chittenden, J. P.; Niasse, N.; Presura, R.; Haque, S.; Wallace, M.; Arias, A.; Covington, A.; Sawada, H.; Wiewior, P.; Beg, F. N. Article Applied Physics Letters (2014)
Study of instability formation and EUV emission in thin liners driven with a compact 250 kA, 150 ns linear transformer driver Valenzuela, JC; Collins, GW; Mariscal, D.; Wyndham, ES; Beg, FN Article ISI PHYSICS OF PLASMAS (2014)
Observations of soft X-ray emission and plasma dynamics of a compact capillary discharge operated in xenon Valenzuela, JC; Wyndham, ES; Favre, M.; Chuaqui, H Article ISI SCOPUS Physics of Plasmas (2013)
Current measurement by Faraday effect on GEPOPU Correa N., Chuaqui H.; Wyndham, E; Veloso F., Valenzuela J.; Favre M., Bhuyan H. Article Applied Optics (2012)
Implementation of moire-schlieren deflectometry on a small scale fast capillary plasma discharge Valenzuela, J.C.; Wyndham, E.S.; Chuaqui, H; Cortes D.S.; Favre, M.; Bhuyan, H Article ISI SCOPUS Journal of Applied Physics (2012)
Observations of the emission processes of a fast capillary discharge operated in nitrogen Valdivia, M. P.; Wyndham, E.S.; Favre, M.; Valenzuela, J.C.; Chuaqui, H; Bhuyan, H Article ISI SCOPUS Plasma Sources Science and Technology (2012)
Fast plasma discharge capillary design as a high power throughput soft x-ray emission source Wyndham, E. S.; Favre, M.; Valdivia, M. P.; Valenzuela, J. C.; Chuaqui, H.; Bhuyan, H. Article Review of Scientific Instruments (2010)
Sub-micron size carbon structures synthesized using plasma enhanced CVD, without external heating and no catalyzer action Valderrama, E; Favre M., Bhuyan H.; Ruiz, HM; Wyndham, E; Valenzuela J., Chuaqui H. Article Surface and Coatings Technology (2010)
Experimental observations in compact capillary discharges Favre M., Wyndham; E, Lenero; AM, Suzuki; F, Valenzuela J.; Avaria G., Ruiz M.; Bhuyan H., Chuaqui H. Article Plasma Sources Science and Technology (2008)


Astrophysical plasmas at laboratory scale (astropals) Veloso, Felipe Proyecto (2019)
Study of preionization effects on gas-puff implosion and stagnation dynamics Valenzuela, Julio Proyecto (2018)
FORMACION DE PLASMAS DE GASES Y METALES EN DESCARGAS PULSADAS EN CAPILARES SEGMENTADOS - THE FORMATION OF PLASMAS OF GASES AND METALS IN PULSED SEGMENTED CAPILLARY DISCHARGES FONDECYT (1120816) Proyecto 2012-2014 Personal técnico y/o de apoyo
EXPERIMENTAL STUDY OF THE CURRENT DISTRIBUTION AND STABILITY INA Z-PINCH DISCHARGE. FONDECYT (1110314) Proyecto 2011-2013 Personal técnico y/o de apoyo
THE ULTRA LOW INDUCTANCE NITROGEN CAPILLARY DISCHARGE AS A WATER WINDOW SOFT X-RAY SOURCE FONDECYT (1100065) Proyecto 2010-2012 Tesista
THE PHYSICAL PROCESSES IN FAST REPETITION RATE CAPILLARY DISCHARGES. FONDECYT (1060643) Proyecto 2006-2008 Tesista