| Autor: |
Li CK; Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA., Séguin FH, Rygg JR, Frenje JA, Manuel M, Petrasso RD, Betti R, Delettrez J, Knauer JP, Marshall F, Meyerhofer DD, Shvarts D, Smalyuk VA, Stoeckl C, Landen OL, Town RP, Back CA, Kilkenny JD |
| Jazyk: |
angličtina |
| Zdroj: |
Physical review letters [Phys Rev Lett] 2008 Jun 06; Vol. 100 (22), pp. 225001. Date of Electronic Publication: 2008 Jun 02. |
| DOI: |
10.1103/PhysRevLett.100.225001 |
| Abstrakt: |
Time-gated, monoenergetic radiography with 15-MeV protons provides unique measurements of implosion dynamics in direct-drive inertial-confinement fusion. Images obtained during acceleration, coasting, deceleration, and stagnation display a comprehensive picture of spherical implosions. Critical information inferred from such images, hitherto unavailable, characterizes the spatial structure and temporal evolution of self-generated fields and plasma areal density. Results include the first observation of a radial electric field inside the imploding capsule. It is initially directed inward (at approximately 10(9) V/m), eventually reverses direction ( approximately 10(8) V/m), and is the probable consequence of the evolution of the electron pressure gradient. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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