TY - JOUR
T1 - Numerical analysis on a conical shaped target for laser fusion rocket
AU - Yamamura, Toru
AU - Edamoto, Masafumi
AU - Kojima, Tomihiko
AU - Morita, Taichi
AU - Yamamoto, Naoji
AU - Sunahara, Atsushi
AU - Johzaki, Tomoyuki
AU - Nakashima, Hideki
N1 - Funding Information:
The computation was carried out using the computer resource offered under the category of general projects by Research Institute for Information Technology, Kyushu University and achieved through the use of large-scale computer systems at the Cybermedia Center, Osaka University. This research was partially supported by JSPS KAKENHI grant number 17K14876.
Publisher Copyright:
© 2020
PY - 2020/11
Y1 - 2020/11
N2 - Laser fusion rocket can achieve large thrust and high specific impulse by utilizing huge amount of fusion energy to heat up a propellant. One of the issues of this system is heavy neutron shields which are heated by neutrons. The propulsion performance of a conical target that can reduce neutron radiation to the coil is calculated by numerical analysis. The impulse bits of the spherical and the conical targets are 12 Ns and 0.75 Ns, respectively, and the propellant in the conical target does not contribute to the thrust. This result suggests that the target shape should be optimized to establish both the neutron shielding and large thrust.
AB - Laser fusion rocket can achieve large thrust and high specific impulse by utilizing huge amount of fusion energy to heat up a propellant. One of the issues of this system is heavy neutron shields which are heated by neutrons. The propulsion performance of a conical target that can reduce neutron radiation to the coil is calculated by numerical analysis. The impulse bits of the spherical and the conical targets are 12 Ns and 0.75 Ns, respectively, and the propellant in the conical target does not contribute to the thrust. This result suggests that the target shape should be optimized to establish both the neutron shielding and large thrust.
UR - http://www.scopus.com/inward/record.url?scp=85094124711&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85094124711&partnerID=8YFLogxK
U2 - 10.1016/j.hedp.2020.100894
DO - 10.1016/j.hedp.2020.100894
M3 - Article
AN - SCOPUS:85094124711
SN - 1574-1818
VL - 37
JO - High Energy Density Physics
JF - High Energy Density Physics
M1 - 100894
ER -