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Title: Phase locked multiple rings in the radiation pressure ion acceleration process

Journal Article · · Plasma Physics and Controlled Fusion
ORCiD logo [1];  [2];  [2]; ORCiD logo [2];  [2];  [2]; ORCiD logo [3];  [4];  [3];  [3]
  1. Tsinghua Univ., Beijing (People's Republic of China); Weizmann Institute of Science, Rehovot (Israel)
  2. Tsinghua Univ., Beijing (People's Republic of China)
  3. Univ. of California Los Angeles, Los Angeles, CA (United States)
  4. Univ. of California Los Angeles, Los Angeles, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)

Laser contrast plays a crucial role for obtaining high quality ion beams in the radiation pressure ion acceleration (RPA) process. Through one- and two-dimensional particle-in-cell (PIC) simulations, we show that a plasma with a bi-peak density profile can be produced from a thin foil on the effects of a picosecond prepulse, and it can then lead to distinctive modulations in the ion phase space (phase locked double rings) when the main pulse interacts with the target. These fascinating ion dynamics are mainly due to the trapping effect from the ponderomotive potential well of a formed moving standing wave (i.e. the interference between the incoming pulse and the pulse reflected by a slowly moving surface) at nodes, quite different from the standard RPA process. Here, a theoretical model is derived to explain the underlying mechanism, and good agreements have been achieved with PIC simulations.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-76SF00515; ACI-1339893; PHY-1415386; PHY-500630; SC0008316; SC0008491; SC0010064; SC0014260; 11425521; 11475101; 11535006; 11775125
OSTI ID:
1436108
Journal Information:
Plasma Physics and Controlled Fusion, Vol. 60, Issue 4; ISSN 0741-3335
Publisher:
IOP ScienceCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 2 works
Citation information provided by
Web of Science

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Cited By (1)

Tri-stage quasimonoenergetic proton acceleration from a multi-species thick target journal July 2018

Figures / Tables (5)