Hashimshony D, Zigler A, Papadopoulos K
Racah Institute of Physics, Hebrew University, Jerusalem, Israel.
Phys Rev Lett. 2001 Mar 26;86(13):2806-9. doi: 10.1103/PhysRevLett.86.2806.
The conversion of static electric fields to electromagnetic radiation by the incidence of a superluminous ionization front on plasma is investigated. For extremely superluminous fronts, the radiation is close to the plasma frequency and is converted with efficiency of order unity. A proof-of-principle experiment was conducted using semiconductor plasma containing an alternately charged capacitor array. The process has important implications in astrophysical plasmas, such as supernova emission, and to laboratory development of compact, coherent, tunable radiation sources in the THz range.
研究了超光速电离前沿在等离子体中入射时将静电场转换为电磁辐射的过程。对于极超光速前沿，辐射接近等离子体频率且转换效率约为单位量级。利用包含交替充电电容器阵列的半导体等离子体进行了原理验证实验。该过程在天体物理等离子体（如超新星发射）以及太赫兹范围内紧凑、相干、可调谐辐射源的实验室开发方面具有重要意义。
