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Lecture Notes in Physics

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VIII Contents<br />

3.3.1 Basics of Particle and Photon-Induced Nuclear<br />

ReactionsandTheirDetection ....................... 31<br />

3.3.2 Photo-Induced Reactions: Fission (γ,f), Emission<br />

of Neutrons (γ,xn), and Emission of Protons (γ,p)...... 33<br />

3.3.3 Reactions Induced by Proton or Ion Impact . . . . . . . . . . . . 36<br />

3.4 FutureApplications ........................................ 39<br />

References ...................................................... 41<br />

4 POLARIS: An All Diode-Pumped Ultrahigh Peak Power<br />

Laser for High Repetition Rates<br />

J. He<strong>in</strong>, M. C. Kaluza, R. Bödefeld, M. Siebold, S. Podleska, and<br />

R. Sauerbrey .................................................... 47<br />

4.1 Introduction............................................... 47<br />

4.2 Ytterbium-Doped Fluoride Phosphate Glass<br />

astheLaserActiveMedium................................. 50<br />

4.3 Diodes for Solid State Laser Pump<strong>in</strong>g . . . . . . . . . . . . . . . . . . . . . . . . 52<br />

4.4 ThePOLARISLaser ....................................... 54<br />

4.5 The Five Amplification Stages of POLARIS . . . . . . . . . . . . . . . . . . . 56<br />

4.5.1 The Two Regenerative Amplifiers A1 and A2 . . . . . . . . . . 56<br />

4.5.2 TheMultipassAmplifiersA3andA4 ................. 57<br />

4.5.3 ADesignfortheAmplifierA5 ....................... 59<br />

4.6 TheTiledGrat<strong>in</strong>gCompressor .............................. 61<br />

4.7 FutureProspects........................................... 64<br />

References ...................................................... 64<br />

5 The Megajoule Laser – A High-Energy-Density<br />

<strong>Physics</strong> Facility<br />

D. Besnard ..................................................... 67<br />

5.1 LMJDescriptionandCharacteristics ......................... 67<br />

5.1.1 LMJPerformances ................................. 67<br />

5.1.2 LIL/LMJ Facility Description . . . . . . . . . . . . . . . . . . . . . . . . 69<br />

5.2 LILPerformances.......................................... 70<br />

5.3 LMJ Facility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73<br />

5.4 LMJIgnitionandHEDPPrograms........................... 75<br />

5.5 Conclusions ............................................... 76<br />

References ...................................................... 77<br />

Part II Sources<br />

6 Electron and Proton Beams Produced<br />

by Ultrashort Laser Pulses<br />

V. Malka, J. Faure, S. Fritzler, and Y. Gl<strong>in</strong>ec ....................... 81<br />

6.1 Introduction............................................... 81<br />

6.2 TheoreticalBackground..................................... 82<br />

6.2.1 Electron Beam Generation <strong>in</strong> Underdense Plasmas . . . . . . 82

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