{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2002:FAANRJMTPEY75KDQJ6KYTNKJFX","short_pith_number":"pith:FAANRJMT","canonical_record":{"source":{"id":"cond-mat/0208133","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2002-08-07T13:21:08Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"f0deb3143d8a725b5112b1b5130e69b19650ae6691d8c6ecdfcb31e17802bad7","abstract_canon_sha256":"da9fa41c81f9b5f32665ff9906cf217e30fff95accf6f65daea5a8f3db1a93ed"},"schema_version":"1.0"},"canonical_sha256":"2800d8a5937931fea8704f9589b5492dfc53b9475690f07bbcf462b9b4b6f478","source":{"kind":"arxiv","id":"cond-mat/0208133","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0208133","created_at":"2026-05-18T00:11:44Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0208133v1","created_at":"2026-05-18T00:11:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0208133","created_at":"2026-05-18T00:11:44Z"},{"alias_kind":"pith_short_12","alias_value":"FAANRJMTPEY7","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"FAANRJMTPEY75KDQ","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"FAANRJMT","created_at":"2026-05-18T12:25:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2002:FAANRJMTPEY75KDQJ6KYTNKJFX","target":"record","payload":{"canonical_record":{"source":{"id":"cond-mat/0208133","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2002-08-07T13:21:08Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"f0deb3143d8a725b5112b1b5130e69b19650ae6691d8c6ecdfcb31e17802bad7","abstract_canon_sha256":"da9fa41c81f9b5f32665ff9906cf217e30fff95accf6f65daea5a8f3db1a93ed"},"schema_version":"1.0"},"canonical_sha256":"2800d8a5937931fea8704f9589b5492dfc53b9475690f07bbcf462b9b4b6f478","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:11:44.635226Z","signature_b64":"GZXsdEWn2xJSmbwHDpcgKCx2KLVzAIayp0VLMyljmBxxXDFjd6rJAw9FKjOJ9o65bR+holx76DfBN3WOoCWKCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2800d8a5937931fea8704f9589b5492dfc53b9475690f07bbcf462b9b4b6f478","last_reissued_at":"2026-05-18T00:11:44.634441Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:11:44.634441Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"cond-mat/0208133","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:11:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Wnv3JsBqlajh3y5wHYPNJcg+ynwFR5q/f6JvY6Fcje+hBpDk+LuBTm0ISC8R4ft8D07qKR5gcsfAASQZ9qo0Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T06:26:42.724190Z"},"content_sha256":"577a40227a2f033138ad7bf9c11a1b34e4e573f5bf2b89cb206ad8a8296ea22d","schema_version":"1.0","event_id":"sha256:577a40227a2f033138ad7bf9c11a1b34e4e573f5bf2b89cb206ad8a8296ea22d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2002:FAANRJMTPEY75KDQJ6KYTNKJFX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Transport critical current densities and n factors in mono- and multifilamentary MgB2/Fe tapes and wires using fine powders","license":"","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.supr-con","authors_text":"C. Beneduce, D. Uglietti, H.L. Suo, P. Lezza, R. Flukiger, V. Abacherli","submitted_at":"2002-08-07T13:21:08Z","abstract_excerpt":"Mono- and multifilamentary MgB2/Fe tapes and wires with high transport critical current densities have been prepared using the powder-in-tube (PIT) process. The fabrication details are described. The effect of powder grain sizes and recrystallization temperature on jc has been investigated. At 25K and 1 T, jc values close to 105 A/cm2 were measured, while jc of 106 A/cm2 were extrapolated for 4.2K/0T in our monofilamentary tape. MgB2/Fe tapes exhibit high exponential n factors for the resistive transition: n ~ 80 and 40 were found at 5 T and 7 T, respectively. The highest transport jc values o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0208133","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:11:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fRNkWCglOZ/hpXc5O08RehwhEldMRccs4tBdWLIEOL50qIpLOZ094gsP4vJAAPBozxIFU8xOzmKjIUOjppMgCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T06:26:42.724555Z"},"content_sha256":"ae1f7cfd54026508a0b443a71e97a1ed483e4948ab48335d49e2bcdd7a8d576b","schema_version":"1.0","event_id":"sha256:ae1f7cfd54026508a0b443a71e97a1ed483e4948ab48335d49e2bcdd7a8d576b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FAANRJMTPEY75KDQJ6KYTNKJFX/bundle.json","state_url":"https://pith.science/pith/FAANRJMTPEY75KDQJ6KYTNKJFX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FAANRJMTPEY75KDQJ6KYTNKJFX/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":"2026-05-30T06:26:42Z","links":{"resolver":"https://pith.science/pith/FAANRJMTPEY75KDQJ6KYTNKJFX","bundle":"https://pith.science/pith/FAANRJMTPEY75KDQJ6KYTNKJFX/bundle.json","state":"https://pith.science/pith/FAANRJMTPEY75KDQJ6KYTNKJFX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FAANRJMTPEY75KDQJ6KYTNKJFX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:FAANRJMTPEY75KDQJ6KYTNKJFX","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":"da9fa41c81f9b5f32665ff9906cf217e30fff95accf6f65daea5a8f3db1a93ed","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2002-08-07T13:21:08Z","title_canon_sha256":"f0deb3143d8a725b5112b1b5130e69b19650ae6691d8c6ecdfcb31e17802bad7"},"schema_version":"1.0","source":{"id":"cond-mat/0208133","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0208133","created_at":"2026-05-18T00:11:44Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0208133v1","created_at":"2026-05-18T00:11:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0208133","created_at":"2026-05-18T00:11:44Z"},{"alias_kind":"pith_short_12","alias_value":"FAANRJMTPEY7","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"FAANRJMTPEY75KDQ","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"FAANRJMT","created_at":"2026-05-18T12:25:50Z"}],"graph_snapshots":[{"event_id":"sha256:ae1f7cfd54026508a0b443a71e97a1ed483e4948ab48335d49e2bcdd7a8d576b","target":"graph","created_at":"2026-05-18T00:11:44Z","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":"Mono- and multifilamentary MgB2/Fe tapes and wires with high transport critical current densities have been prepared using the powder-in-tube (PIT) process. The fabrication details are described. The effect of powder grain sizes and recrystallization temperature on jc has been investigated. At 25K and 1 T, jc values close to 105 A/cm2 were measured, while jc of 106 A/cm2 were extrapolated for 4.2K/0T in our monofilamentary tape. MgB2/Fe tapes exhibit high exponential n factors for the resistive transition: n ~ 80 and 40 were found at 5 T and 7 T, respectively. The highest transport jc values o","authors_text":"C. Beneduce, D. Uglietti, H.L. Suo, P. Lezza, R. Flukiger, V. Abacherli","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2002-08-07T13:21:08Z","title":"Transport critical current densities and n factors in mono- and multifilamentary MgB2/Fe tapes and wires using fine powders"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0208133","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":"sha256:577a40227a2f033138ad7bf9c11a1b34e4e573f5bf2b89cb206ad8a8296ea22d","target":"record","created_at":"2026-05-18T00:11:44Z","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":"da9fa41c81f9b5f32665ff9906cf217e30fff95accf6f65daea5a8f3db1a93ed","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2002-08-07T13:21:08Z","title_canon_sha256":"f0deb3143d8a725b5112b1b5130e69b19650ae6691d8c6ecdfcb31e17802bad7"},"schema_version":"1.0","source":{"id":"cond-mat/0208133","kind":"arxiv","version":1}},"canonical_sha256":"2800d8a5937931fea8704f9589b5492dfc53b9475690f07bbcf462b9b4b6f478","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2800d8a5937931fea8704f9589b5492dfc53b9475690f07bbcf462b9b4b6f478","first_computed_at":"2026-05-18T00:11:44.634441Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:11:44.634441Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GZXsdEWn2xJSmbwHDpcgKCx2KLVzAIayp0VLMyljmBxxXDFjd6rJAw9FKjOJ9o65bR+holx76DfBN3WOoCWKCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:11:44.635226Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0208133","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:577a40227a2f033138ad7bf9c11a1b34e4e573f5bf2b89cb206ad8a8296ea22d","sha256:ae1f7cfd54026508a0b443a71e97a1ed483e4948ab48335d49e2bcdd7a8d576b"],"state_sha256":"227be8711d626c82339cd0a6d9e2c21c67b566ecc53164a1b37bd0c2028d50aa"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aOVc7rRg3o9pA5t5qMLdVOZdGJxwdXEJRN9Xs7GM7LjWpQablosqFHnw65asCkYg/y+Yw2Y2hE2EeXbJh98tBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T06:26:42.726496Z","bundle_sha256":"f1f8723257e9b290aa8913d1308d80eb1e28f5199046d7b87b9fd61205d22cb6"}}