{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:UENHSRBNB5J3ELVFOVT2NYYJLH","short_pith_number":"pith:UENHSRBN","canonical_record":{"source":{"id":"1512.08915","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2015-12-30T11:46:38Z","cross_cats_sorted":[],"title_canon_sha256":"d9d528f9f424c3b3b91806e5b586bf3747f03a3ea2cc6ec287c0371b1f219762","abstract_canon_sha256":"67cbd9e9807de0c8404a66488ef15f6fdda5b1a16358c448210bc97fcdbf7bc2"},"schema_version":"1.0"},"canonical_sha256":"a11a79442d0f53b22ea57567a6e30959cae5627533dd56436f8ee8c41c540b80","source":{"kind":"arxiv","id":"1512.08915","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.08915","created_at":"2026-05-18T01:21:10Z"},{"alias_kind":"arxiv_version","alias_value":"1512.08915v2","created_at":"2026-05-18T01:21:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.08915","created_at":"2026-05-18T01:21:10Z"},{"alias_kind":"pith_short_12","alias_value":"UENHSRBNB5J3","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"UENHSRBNB5J3ELVF","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"UENHSRBN","created_at":"2026-05-18T12:29:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:UENHSRBNB5J3ELVFOVT2NYYJLH","target":"record","payload":{"canonical_record":{"source":{"id":"1512.08915","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2015-12-30T11:46:38Z","cross_cats_sorted":[],"title_canon_sha256":"d9d528f9f424c3b3b91806e5b586bf3747f03a3ea2cc6ec287c0371b1f219762","abstract_canon_sha256":"67cbd9e9807de0c8404a66488ef15f6fdda5b1a16358c448210bc97fcdbf7bc2"},"schema_version":"1.0"},"canonical_sha256":"a11a79442d0f53b22ea57567a6e30959cae5627533dd56436f8ee8c41c540b80","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:21:10.994723Z","signature_b64":"pu3BlGdpvXj/cXI1Rzrt7zcIfsLPC+mb/0lq6X+uRjR15HicFfpez0KstZls7175mwyCIFGaNRywix4tEBbFCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a11a79442d0f53b22ea57567a6e30959cae5627533dd56436f8ee8c41c540b80","last_reissued_at":"2026-05-18T01:21:10.994184Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:21:10.994184Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1512.08915","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:21:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aPmyjYR9wHO41+2Bs5OFuJCHri2bKszV+SgBVDIUXOaPdLM39fQ4f5bVR1ZCuFX1wluzqrdbf5g7JBayC9bMCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T21:45:58.867890Z"},"content_sha256":"dd14417c095885fdeaa05593b690fec21b555e444fe63f2d244f67c5b65435de","schema_version":"1.0","event_id":"sha256:dd14417c095885fdeaa05593b690fec21b555e444fe63f2d244f67c5b65435de"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:UENHSRBNB5J3ELVFOVT2NYYJLH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Effect of a stochastic electric field on plasma confinement in FTU","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.plasm-ph","authors_text":"Giovanni Montani, Nakia Carlevaro, Roberto Martorelli","submitted_at":"2015-12-30T11:46:38Z","abstract_excerpt":"We discuss a stochastic model for the behavior of electrons in a magnetically confined plasma having axial symmetry. The aim of the work is to provide an explanation for the density limit observed in the Frascati Tokamak Upgrade machine. The dynamical framework deals with an electron embedded in a stationary and uniform magnetic field and affected by an orthogonal random electric field. The behavior of the average plasma profile is determined by the appropriate Fokker-Planck equation associated to the considered model and the disruptive effects of the stochastic electric field is shown. The co"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.08915","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:21:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uLjLGk1KySnNr7hop5OnN46s51NvQxW0DYI+Wr9rrsaTyjYvSzbO5mYW6YB2dCyPBCMluTm3dBAOQGrdTbipDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T21:45:58.868262Z"},"content_sha256":"164d60b2becee49d8c15e59f69175f84fa962469dc6de40fe4d5ee79781c3516","schema_version":"1.0","event_id":"sha256:164d60b2becee49d8c15e59f69175f84fa962469dc6de40fe4d5ee79781c3516"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UENHSRBNB5J3ELVFOVT2NYYJLH/bundle.json","state_url":"https://pith.science/pith/UENHSRBNB5J3ELVFOVT2NYYJLH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UENHSRBNB5J3ELVFOVT2NYYJLH/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-25T21:45:58Z","links":{"resolver":"https://pith.science/pith/UENHSRBNB5J3ELVFOVT2NYYJLH","bundle":"https://pith.science/pith/UENHSRBNB5J3ELVFOVT2NYYJLH/bundle.json","state":"https://pith.science/pith/UENHSRBNB5J3ELVFOVT2NYYJLH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UENHSRBNB5J3ELVFOVT2NYYJLH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:UENHSRBNB5J3ELVFOVT2NYYJLH","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":"67cbd9e9807de0c8404a66488ef15f6fdda5b1a16358c448210bc97fcdbf7bc2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2015-12-30T11:46:38Z","title_canon_sha256":"d9d528f9f424c3b3b91806e5b586bf3747f03a3ea2cc6ec287c0371b1f219762"},"schema_version":"1.0","source":{"id":"1512.08915","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.08915","created_at":"2026-05-18T01:21:10Z"},{"alias_kind":"arxiv_version","alias_value":"1512.08915v2","created_at":"2026-05-18T01:21:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.08915","created_at":"2026-05-18T01:21:10Z"},{"alias_kind":"pith_short_12","alias_value":"UENHSRBNB5J3","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"UENHSRBNB5J3ELVF","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"UENHSRBN","created_at":"2026-05-18T12:29:44Z"}],"graph_snapshots":[{"event_id":"sha256:164d60b2becee49d8c15e59f69175f84fa962469dc6de40fe4d5ee79781c3516","target":"graph","created_at":"2026-05-18T01:21:10Z","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":"We discuss a stochastic model for the behavior of electrons in a magnetically confined plasma having axial symmetry. The aim of the work is to provide an explanation for the density limit observed in the Frascati Tokamak Upgrade machine. The dynamical framework deals with an electron embedded in a stationary and uniform magnetic field and affected by an orthogonal random electric field. The behavior of the average plasma profile is determined by the appropriate Fokker-Planck equation associated to the considered model and the disruptive effects of the stochastic electric field is shown. The co","authors_text":"Giovanni Montani, Nakia Carlevaro, Roberto Martorelli","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2015-12-30T11:46:38Z","title":"Effect of a stochastic electric field on plasma confinement in FTU"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.08915","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:dd14417c095885fdeaa05593b690fec21b555e444fe63f2d244f67c5b65435de","target":"record","created_at":"2026-05-18T01:21:10Z","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":"67cbd9e9807de0c8404a66488ef15f6fdda5b1a16358c448210bc97fcdbf7bc2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2015-12-30T11:46:38Z","title_canon_sha256":"d9d528f9f424c3b3b91806e5b586bf3747f03a3ea2cc6ec287c0371b1f219762"},"schema_version":"1.0","source":{"id":"1512.08915","kind":"arxiv","version":2}},"canonical_sha256":"a11a79442d0f53b22ea57567a6e30959cae5627533dd56436f8ee8c41c540b80","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a11a79442d0f53b22ea57567a6e30959cae5627533dd56436f8ee8c41c540b80","first_computed_at":"2026-05-18T01:21:10.994184Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:21:10.994184Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pu3BlGdpvXj/cXI1Rzrt7zcIfsLPC+mb/0lq6X+uRjR15HicFfpez0KstZls7175mwyCIFGaNRywix4tEBbFCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:21:10.994723Z","signed_message":"canonical_sha256_bytes"},"source_id":"1512.08915","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dd14417c095885fdeaa05593b690fec21b555e444fe63f2d244f67c5b65435de","sha256:164d60b2becee49d8c15e59f69175f84fa962469dc6de40fe4d5ee79781c3516"],"state_sha256":"849ed4fac044e1e5cf45f798836c772a8131d6f5ac041bf0f5160522ebcdb048"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lTzCeWwcO5aAPM/Ygv1+fLrUULQj18hwm0O8szcDR9ndbU3rvPuZ82tjFkUHeheF8LkHSQLgANO1noYnQezeBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T21:45:58.871704Z","bundle_sha256":"df30e8427f09c36a8148af58b34b5a8d5de5726b65e704a4804497d03bcc967c"}}