{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"3ac11611a862a16014e75a678eb9e2f58371bda92f9ab182686b94e296bf2bed","created":"2026-10-03T07:18:08Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["5475cf5dc5b1a72283d26dc95dc6e00d7ea4e00096a7c6492e409a1816eeb011"],"salt":"fb50cd5618c4d87df1876e439b9e1bbb6f463b722fc0a69f62c6451efecdd64c","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"yes-no","assisted_by":[],"external_id":"plasma.hed-fusion.maglif-high-gain","kind":"well-posed","literature_status":"open","n":"1","parents":[],"plain":"A different route to inertial fusion uses a huge electric current to crush a metal tube of fuel that has been magnetized and preheated by a laser. Designs predict high gain on a larger machine, but whether instabilities and mixing allow it is unknown.","posed_since":"2012","precise":"In magnetized liner inertial fusion (MagLIF: axial seed field of order $1e5\\ \\mathrm{G}$, laser-preheated D or DT fuel, liner imploded by a current pulse of about $20\\ \\mathrm{MA}$ on the Z machine), magnetic insulation lowers the required fuel areal density. Determine whether integrated designs reach ignition and gain $G\\ \\text{above}\\ 10$ at drive currents of $40\\ \\text{to}\\ 70\\ \\mathrm{MA}$, given measured limits from magneto-Rayleigh-Taylor growth, preheat-induced mix and magnetized electron heat transport (Nernst advection). An answer is a radiation-MHD design validated on Z data at $20\\ \\mathrm{MA}$, or a demonstrated scaling showing it fails.","problem_ref":null,"references":"","settled_by":"Validated radiation-MHD scaling from Z experiments to a next-generation pulsed-power driver, then an experiment on such a driver.","status_note":"Slutz and Vesey (2012, https://doi.org/10.1103/PhysRevLett.108.025003) predicted gains well above 10 at about 60 MA; no driver at that current existed as of mid-2026.","title":"Can magnetized liner inertial fusion reach high gain","topic_ref":"35a789f90b244cd8706c293912ba9a34c2bdead179625fc1aecf24efeea02394"},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"d9ba2b5cafb58399ed002cedfc051549d81fc48db992cd4eeab95b3e4557ef5b","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"d1bd8301130f5484f07a7e42798f307485c2d12132e05047f82490add46e04a4","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"AOA0X2B01LK97XqU4cyi0IYhh6aY0bncm1xXYiG0YV5AZxI8xWE1XQSGRoNOKMFv1qSXsMi0Fskj5fIaKBIhCg"},"schema":"pubphys.envelope/1"},"record_hash":"d9ba2b5cafb58399ed002cedfc051549d81fc48db992cd4eeab95b3e4557ef5b","leaf_index":1840}