{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:N5E75OQZEK2V64DKLUHMBVUUJY","short_pith_number":"pith:N5E75OQZ","schema_version":"1.0","canonical_sha256":"6f49feba1922b55f706a5d0ec0d6944e17ecf622d66baf77cb97989d03764203","source":{"kind":"arxiv","id":"1805.02757","version":1},"attestation_state":"computed","paper":{"title":"Dirac R-matrix calculations for the electron-impact excitation of neutral tungsten providing noninvasive diagnostics for magnetic confinement fusion","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.plasm-ph"],"primary_cat":"physics.atom-ph","authors_text":"C. A. Johnson, C. A. Ramsbottom, C. P. Ballance, D. A. Ennis, R. T. Smyth, S. D. Loch","submitted_at":"2018-05-07T21:42:45Z","abstract_excerpt":"Neutral tungsten is the primary candidate as a wall material in the divertor region of the International Thermonuclear Experimental Reactor (ITER). The efficient operation of ITER depends heavily on precise atomic physics calculations for the determination of reliable erosion diagnostics, helping to characterise the influx of tungsten impurities into the core plasma. The following paper presents detailed calculations of the atomic structure of neutral tungsten using the multiconfigurational Dirac-Fock method, drawing comparisons with experimental measurements where available, and includes a cr"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1805.02757","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2018-05-07T21:42:45Z","cross_cats_sorted":["physics.plasm-ph"],"title_canon_sha256":"aa0bb8d63cc6e8c9f93c66d1dc9292742e14d5157f9cb423ad577692ada88259","abstract_canon_sha256":"a154e230af43be070a0748171c3742de991e5f9e455539b8ab05b10d7ae67501"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:16:35.777365Z","signature_b64":"sJHVUZURZ/xQ8E1I8IvbtTZSlkp3bcUksyhAFaF71u0wzTKeSYYO6xqEwh8Pqh8MCO2WCxZuz4WgYb3YV/PiBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6f49feba1922b55f706a5d0ec0d6944e17ecf622d66baf77cb97989d03764203","last_reissued_at":"2026-05-18T00:16:35.776606Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:16:35.776606Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Dirac R-matrix calculations for the electron-impact excitation of neutral tungsten providing noninvasive diagnostics for magnetic confinement fusion","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.plasm-ph"],"primary_cat":"physics.atom-ph","authors_text":"C. A. Johnson, C. A. Ramsbottom, C. P. Ballance, D. A. Ennis, R. T. Smyth, S. D. Loch","submitted_at":"2018-05-07T21:42:45Z","abstract_excerpt":"Neutral tungsten is the primary candidate as a wall material in the divertor region of the International Thermonuclear Experimental Reactor (ITER). The efficient operation of ITER depends heavily on precise atomic physics calculations for the determination of reliable erosion diagnostics, helping to characterise the influx of tungsten impurities into the core plasma. The following paper presents detailed calculations of the atomic structure of neutral tungsten using the multiconfigurational Dirac-Fock method, drawing comparisons with experimental measurements where available, and includes a cr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.02757","kind":"arxiv","version":1},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1805.02757","created_at":"2026-05-18T00:16:35.776879+00:00"},{"alias_kind":"arxiv_version","alias_value":"1805.02757v1","created_at":"2026-05-18T00:16:35.776879+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.02757","created_at":"2026-05-18T00:16:35.776879+00:00"},{"alias_kind":"pith_short_12","alias_value":"N5E75OQZEK2V","created_at":"2026-05-18T12:32:40.477152+00:00"},{"alias_kind":"pith_short_16","alias_value":"N5E75OQZEK2V64DK","created_at":"2026-05-18T12:32:40.477152+00:00"},{"alias_kind":"pith_short_8","alias_value":"N5E75OQZ","created_at":"2026-05-18T12:32:40.477152+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/N5E75OQZEK2V64DKLUHMBVUUJY","json":"https://pith.science/pith/N5E75OQZEK2V64DKLUHMBVUUJY.json","graph_json":"https://pith.science/api/pith-number/N5E75OQZEK2V64DKLUHMBVUUJY/graph.json","events_json":"https://pith.science/api/pith-number/N5E75OQZEK2V64DKLUHMBVUUJY/events.json","paper":"https://pith.science/paper/N5E75OQZ"},"agent_actions":{"view_html":"https://pith.science/pith/N5E75OQZEK2V64DKLUHMBVUUJY","download_json":"https://pith.science/pith/N5E75OQZEK2V64DKLUHMBVUUJY.json","view_paper":"https://pith.science/paper/N5E75OQZ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1805.02757&json=true","fetch_graph":"https://pith.science/api/pith-number/N5E75OQZEK2V64DKLUHMBVUUJY/graph.json","fetch_events":"https://pith.science/api/pith-number/N5E75OQZEK2V64DKLUHMBVUUJY/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/N5E75OQZEK2V64DKLUHMBVUUJY/action/timestamp_anchor","attest_storage":"https://pith.science/pith/N5E75OQZEK2V64DKLUHMBVUUJY/action/storage_attestation","attest_author":"https://pith.science/pith/N5E75OQZEK2V64DKLUHMBVUUJY/action/author_attestation","sign_citation":"https://pith.science/pith/N5E75OQZEK2V64DKLUHMBVUUJY/action/citation_signature","submit_replication":"https://pith.science/pith/N5E75OQZEK2V64DKLUHMBVUUJY/action/replication_record"}},"created_at":"2026-05-18T00:16:35.776879+00:00","updated_at":"2026-05-18T00:16:35.776879+00:00"}