{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:6EINA2QDMARATT2LR3QFHS45G2","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":"67f94dd321e41a476c03c33abfce962d86b2e8e141eca24f8074c3bd60e3960f","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2013-01-22T17:31:47Z","title_canon_sha256":"c72fa6d50141f507d82b8f6bb86c502f43cb419c718020c1dc0b6a098ce900ee"},"schema_version":"1.0","source":{"id":"1301.5251","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1301.5251","created_at":"2026-05-18T03:35:52Z"},{"alias_kind":"arxiv_version","alias_value":"1301.5251v1","created_at":"2026-05-18T03:35:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1301.5251","created_at":"2026-05-18T03:35:52Z"},{"alias_kind":"pith_short_12","alias_value":"6EINA2QDMARA","created_at":"2026-05-18T12:27:36Z"},{"alias_kind":"pith_short_16","alias_value":"6EINA2QDMARATT2L","created_at":"2026-05-18T12:27:36Z"},{"alias_kind":"pith_short_8","alias_value":"6EINA2QD","created_at":"2026-05-18T12:27:36Z"}],"graph_snapshots":[{"event_id":"sha256:5794bb6f55248a3eaaf6744614721e80f5cca06fc23f6ace5dfd6da7d7899062","target":"graph","created_at":"2026-05-18T03:35:52Z","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":"It is well known that the A15 layer in the subelements of a Powder-In-Tube (PIT) Nb3Sn wire exhibits two different grain morphologies: a region with fine grains (~200 nm in size) representing about 60% of the total A15 area and one with large grains (1-2 {\\mu}m in size). By means of high field specific heat and magnetization measurements we have shown that these two A15 phases correspond to two distinctly different Tc distributions, the large grains region exhibiting a higher Tc and a lower Bc2, the fine grains region a lower Tc and a higher Bc2. We report here the values of the superconductin","authors_text":"Carmine Senatore, Rene Flukiger","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2013-01-22T17:31:47Z","title":"Formation and upper critical fields of the two distinct A15 phases in the subelements of Powder-In-Tube Nb3Sn wires"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1301.5251","kind":"arxiv","version":1},"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:fa15c181eef20e55925856e749b229c1558ea8728b290ed30f2024028c7fde34","target":"record","created_at":"2026-05-18T03:35:52Z","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":"67f94dd321e41a476c03c33abfce962d86b2e8e141eca24f8074c3bd60e3960f","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2013-01-22T17:31:47Z","title_canon_sha256":"c72fa6d50141f507d82b8f6bb86c502f43cb419c718020c1dc0b6a098ce900ee"},"schema_version":"1.0","source":{"id":"1301.5251","kind":"arxiv","version":1}},"canonical_sha256":"f110d06a03602209cf4b8ee053cb9d36a0ecf2f5f06ef18114d6df8ad8d4b62b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f110d06a03602209cf4b8ee053cb9d36a0ecf2f5f06ef18114d6df8ad8d4b62b","first_computed_at":"2026-05-18T03:35:52.511057Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:35:52.511057Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HtH8vK35Co4iVAJnMtPGkWOw0DFcc4yP9J/cGq9SLKNEfLc1KiTGRt18qscuNAdVbX2FOvsRhATdNX6iyDBeBA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:35:52.511888Z","signed_message":"canonical_sha256_bytes"},"source_id":"1301.5251","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fa15c181eef20e55925856e749b229c1558ea8728b290ed30f2024028c7fde34","sha256:5794bb6f55248a3eaaf6744614721e80f5cca06fc23f6ace5dfd6da7d7899062"],"state_sha256":"3c3ff86e2ee075de1119e1d58c583ea9dba1ac90121b762bb907d77f5c4a3250"}