High-gain, low-intensity ICF targets for a charged-particle beam fusion driver
| Autor: | A.V. Farnsworth, M.A. Sweeney |
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| Rok vydání: | 1981 |
| Předmět: | |
| Zdroj: | Nuclear Fusion. 21:41-54 |
| ISSN: | 1741-4326 0029-5515 |
| DOI: | 10.1088/0029-5515/21/1/004 |
| Popis: | A class of high-gain ICF targets driven by electrons or light ions is discussed. The targets are characterized by a low-beam-intensity requirement and large size. A magnetic field provides thermal insulation of pre-heated, low-density fuel. The addition of a cryogenic fuel layer increases the gain without requiring significantly increased beam power and intensity. The higher fuel adiabat and reduced fuel losses produce ignition and burn for lower implosion velocities and at lower power and intensity than conventional ablative designs. Gains of 20 to 40 are expected for intensities of 80 TWcm−2, initial magnetic fields of 30–60 kG, an initial fuel radius of 0.2–0.4 cm, and irradiation uniformities of 6–7%. Driver requirements are 45 TWcm−2 if the initial magnetic field is 300–600 kG, sufficient for alpha trapping in the compressed low-density fuel. Voltage shaping increases fuel burn-up and target ρr and lowers power and intensity levels by an additional factor of about 0.6. |
| Databáze: | OpenAIRE |
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