P. A. Shcheglov, M. M. Nazarov, T. A. Semenov, A. A. Tausenev, M. V. Chashchin, A. V. Lazarev, V. M. Gordienko, “Efficient generation of X-ray radiation under relativistic laser pulses interaction with a Kr cluster jet”, Kvantovaya Elektronika, 2024, Volume 54, Number 4,Pages <nobr>236

This article is cited in 2 papers

Interaction of laser radiation with matter

Efficient generation of X-ray radiation under relativistic laser pulses interaction with a Kr cluster jet

P. A. Shcheglov^a, M. M. Nazarov^a, T. A. Semenov^a, A. A. Tausenev^ab, M. V. Chashchin^a, A. V. Lazarev^c, V. M. Gordienko^b

^a National Research Centre "Kurchatov Institute", 123182, Moscow, Russia
^b Moscow State University, Faculty of Physics, 119991, Moscow, Russia
^c Moscow State University, Faculty of Chemistry, 119991, Moscow, Russia

Abstract: X-ray generation under interaction of relativistic laser pulses with krypton clusters has been studied. It is shown that the optimal focusing points for generating characteristic and hard bremsstrahlung are located in regions with different cluster concentrations inside the gas jet. A record (4.2 × 10^-6) conversion efficiency of relativistic laser pulses into characteristic K_a (12.6 keV) has been achieved under interaction with large krypton clusters. The bremsstrahlung plasma temperature has been measured to be T_e = 6 keV at an integral energy of the X-ray pulse of 3 × 10⁹keV/(4π pulse). The application of the designed source in time-resolved X-ray studies and in radiobiology are discussed.

Keywords: X-ray radiation, clusters, laser-plasma source.

Received: 06.05.2024
Revised: 19.07.2024