Time-resolved areal-density measurements with proton spectroscopy in spherical implosions.
The temporal history of the target areal-density near peak compression of direct-drive spherical target implosions has been inferred with 14.7-MeV deuterium-helium-3 D3He proton spectroscopy of the 60-beam, 30-kJ UV OMEGA laser system. The target areal-density grows by a factor of approximately 8 during the time of neutron-production ( approximately 400 ps) before reaching 123+/-16 mg/cm(2) at peak compression in the implosion of a 950-micrometer-diam, 20-micrometer-thick plastic CH capsule filled with 4 atm of D3He fuel.
Smalyuk
V A
VA
Laboratory for Laser Energetics, University of Rochester, 250 East River Road Rochester, New York 14623, USA.
Radha
P B
PB
Delettrez
J A
JA
Glebov
V Yu
VY
Goncharov
V N
VN
Meyerhofer
D D
DD
Regan
S P
SP
Roberts
S
S
Sangster
T C
TC
Soures
J M
JM
Stoeckl
C
C
Frenje
J A
JA
Li
C K
CK
Petrasso
R D
RD
Séguin
F H
FH