High-current, relativistic electron-beam transport in metals and the role of magnetic collimation.
High-resolution coherent transition radiation (CTR) imaging diagnoses electrons accelerated in laser-solid interactions with intensities of approximately 10;{19} W/cm;{2}. The CTR images indicate electron-beam filamentation and annular propagation. The beam temperature and half-angle divergence are inferred to be approximately 1.4 MeV and approximately 16 degrees , respectively. Three-dimensional hybrid-particle-in-cell code simulations reproduce the details of the CTR images assuming an initial half-angle divergence of approximately 56 degrees . Self-generated resistive magnetic fields are responsible for the difference between the initial and measured divergence.
Storm
M
M
University of Rochester, Rochester, NY 14623-1299, USA.
Solodov
A A
AA
Myatt
J F
JF
Meyerhofer
D D
DD
Stoeckl
C
C
Mileham
C
C
Betti
R
R
Nilson
P M
PM
Sangster
T C
TC
Theobald
W
W
Guo
Chunlei
C