{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:VXGQPUPDYBCZOYYD6BX4WSMAC2","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"9f753cd81b8723c0f560188a7dcb896835347307cbc6c27ebb2f8ce690534e76","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2012-04-19T20:47:02Z","title_canon_sha256":"5156a40716aab6c749e69476058e27132cd9ac669724659cac053908f4546912"},"schema_version":"1.0","source":{"id":"1204.4470","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.4470","created_at":"2026-05-18T03:56:44Z"},{"alias_kind":"arxiv_version","alias_value":"1204.4470v2","created_at":"2026-05-18T03:56:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.4470","created_at":"2026-05-18T03:56:44Z"},{"alias_kind":"pith_short_12","alias_value":"VXGQPUPDYBCZ","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_16","alias_value":"VXGQPUPDYBCZOYYD","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_8","alias_value":"VXGQPUPD","created_at":"2026-05-18T12:27:25Z"}],"graph_snapshots":[{"event_id":"sha256:68d634f380baef2143c48b5581239e442f7f6ac988ec4307b250ba1cac0f6657","target":"graph","created_at":"2026-05-18T03:56:44Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"These are notes for the lecture on Transport Theory in a one-week intensive course, \"Techniques of Proton Radiotherapy\". Topics are:\n  Phase space diagrams: model beam line-effect of a scatterer-effect of a drift-the beam ellipse-phase space diagrams for the model beam line-emittance change in a drift-emittance change in a scatterer-phase space for a more realistic beam line-summary\n  Miscellaneous topics: review of Gaussians-the Gaussian approximation to multiple Coulomb scattering (MCS)-relativistic single particle kinematics-completing the square-scattering power\n  Fermi-Eyges theory: histo","authors_text":"Bernard Gottschalk","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2012-04-19T20:47:02Z","title":"Techniques of Proton Radiotherapy: Transport Theory"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.4470","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:abcb76f014a0bfd83cadbb2ba838f6b7cba5f262417f77eb6058ce5fa76dccb6","target":"record","created_at":"2026-05-18T03:56:44Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"9f753cd81b8723c0f560188a7dcb896835347307cbc6c27ebb2f8ce690534e76","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2012-04-19T20:47:02Z","title_canon_sha256":"5156a40716aab6c749e69476058e27132cd9ac669724659cac053908f4546912"},"schema_version":"1.0","source":{"id":"1204.4470","kind":"arxiv","version":2}},"canonical_sha256":"adcd07d1e3c045976303f06fcb49801695fd5d69d5958b6c130870092f0fbd84","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"adcd07d1e3c045976303f06fcb49801695fd5d69d5958b6c130870092f0fbd84","first_computed_at":"2026-05-18T03:56:44.689582Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:56:44.689582Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AA1FHYMpyQC5Y3/9LNszSsDXuNzT87g1mYiEsIlpP3trtlKhnkdhDLBpLFhWNbJgQ1Zy76uOB/5pqii1GjyEBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:56:44.690211Z","signed_message":"canonical_sha256_bytes"},"source_id":"1204.4470","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:abcb76f014a0bfd83cadbb2ba838f6b7cba5f262417f77eb6058ce5fa76dccb6","sha256:68d634f380baef2143c48b5581239e442f7f6ac988ec4307b250ba1cac0f6657"],"state_sha256":"91c3543fec8ba0d98cf0bbf1ccb1e6b7062bb95bc4a1cfc48f6b2d8dc635e86e"}