{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"bf5095f483489b56b9220b72751d9d6f832e557ed9fee9a39b2498d1c25cb679","created":"2026-10-03T07:18:08Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["5475cf5dc5b1a72283d26dc95dc6e00d7ea4e00096a7c6492e409a1816eeb011"],"salt":"a1d6cd11fbf888325f8467a7e205950e8bf0180b9293bc02c8c564fde7adbea2","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"value","assisted_by":[],"external_id":"plasma.kinetic-turbulence-dynamo.heating-partition","kind":"well-posed","literature_status":"partially-resolved","n":"1","parents":[],"plain":"Turbulence in a collision-free plasma heats ions and electrons by different amounts. The ratio sets what telescopes see from hot astrophysical gas, and it is not yet pinned down.","posed_since":"","precise":"For Alfvenic turbulence cascading to kinetic scales, determine the ion-to-electron heating ratio $Q_{i}/Q_{e}$ as a function of ion $\\beta_{i}$, $T_{i}/T_{e}$ and the ratio of compressive to Alfvenic energy injection. An answer is a validated fit $Q_{i}/Q_{e}(\\beta_{i}, T_{i}/T_{e})$ consistent with Parker Solar Probe and Solar Orbiter radial temperature profiles.","problem_ref":null,"references":"","settled_by":"Kinetic simulations in agreement with heating rates inferred from spacecraft temperature profiles across the measured $\\beta$ range.","status_note":"Hybrid gyrokinetic simulations (Kawazura and collaborators, 2019-2020) gave a parametric fit with $Q_{\\mathrm{i}}/Q_{\\mathrm{e}}$ rising steeply with $\\beta_{\\mathrm{i}}$; observational confirmation is incomplete.","title":"Ion-to-electron heating ratio in collisionless turbulence","topic_ref":"0fbe23e43e59314b73b802e78f2d2325c4a6b8b6a539d5dd3f6690b91375cb5f"},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"bfca908fcd853b37fffb7d97ea030ff435f7ddbfcec93a4ae5dc7d1a0046999a","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"847be8c0d6b9fb8d76f7cede02a4487c73f5cfd899110667845097a89a894048","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"L3GTBibitiNuELId2A6t49ZbLOjX6R5Z3se9TkZZx6ZKvoZIPMkInYuWQZQrr97HihXbULtV5fyc3jJYNj3VDA"},"schema":"pubphys.envelope/1"},"record_hash":"bfca908fcd853b37fffb7d97ea030ff435f7ddbfcec93a4ae5dc7d1a0046999a","leaf_index":1846}