{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2005:U4ZPWALGUZW7JC4TMIH6ZDY4H5","short_pith_number":"pith:U4ZPWALG","schema_version":"1.0","canonical_sha256":"a732fb0166a66df48b93620fec8f1c3f5d0955228a3c3c539e6efbb4e779dab4","source":{"kind":"arxiv","id":"astro-ph/0504272","version":1},"attestation_state":"computed","paper":{"title":"Low energy conversion electron detection in superfluid He3 at ultra-low temperature","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"C. Winkelmann, D. Santos, E. Moulin, H. Godfrin, J. F. Macias-Perez, Yu. M. Bunkov","submitted_at":"2005-04-12T14:46:06Z","abstract_excerpt":"We report on the first results of the MACHe3 (MAtrix of Cells of Helium 3) prototype experiment concerning the measurement of low energy conversion electrons at ultra-low temperature. For the first time, the feasibility of the detection of low energy electrons is demonstrated in superfluid He3-B cooled down to 100 microK. Low energy electrons at 7.3 keV coming from the K shell conversion of the 14.4 keV nuclear transition of a low activity Co57 source are detected, opening the possibility to use a He3-based detector for the detection of Weakly Interacting Massive Particles (WIMPs) which are ex"},"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":"astro-ph/0504272","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2005-04-12T14:46:06Z","cross_cats_sorted":[],"title_canon_sha256":"9f2e6f9d61f3e98a6a9cb06cf0cd93014aa3b922e7b3552e03051834fd809a5e","abstract_canon_sha256":"dbcb300d05b3521d3b6428089e065738942496a7fe3c5d91484a8d2e2449e45a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:18:02.773598Z","signature_b64":"NgHeBjjSoJn5/lNfJxxLLSBlopq8iSah54bwz3PyggaSDzxfQRtDCfm4qLHUxeQn0JdhW3qeOU327x46/fh0CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a732fb0166a66df48b93620fec8f1c3f5d0955228a3c3c539e6efbb4e779dab4","last_reissued_at":"2026-05-18T04:18:02.772893Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:18:02.772893Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Low energy conversion electron detection in superfluid He3 at ultra-low temperature","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"C. Winkelmann, D. Santos, E. Moulin, H. Godfrin, J. F. Macias-Perez, Yu. M. Bunkov","submitted_at":"2005-04-12T14:46:06Z","abstract_excerpt":"We report on the first results of the MACHe3 (MAtrix of Cells of Helium 3) prototype experiment concerning the measurement of low energy conversion electrons at ultra-low temperature. For the first time, the feasibility of the detection of low energy electrons is demonstrated in superfluid He3-B cooled down to 100 microK. Low energy electrons at 7.3 keV coming from the K shell conversion of the 14.4 keV nuclear transition of a low activity Co57 source are detected, opening the possibility to use a He3-based detector for the detection of Weakly Interacting Massive Particles (WIMPs) which are ex"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0504272","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":"astro-ph/0504272","created_at":"2026-05-18T04:18:02.773003+00:00"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0504272v1","created_at":"2026-05-18T04:18:02.773003+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0504272","created_at":"2026-05-18T04:18:02.773003+00:00"},{"alias_kind":"pith_short_12","alias_value":"U4ZPWALGUZW7","created_at":"2026-05-18T12:25:53.335082+00:00"},{"alias_kind":"pith_short_16","alias_value":"U4ZPWALGUZW7JC4T","created_at":"2026-05-18T12:25:53.335082+00:00"},{"alias_kind":"pith_short_8","alias_value":"U4ZPWALG","created_at":"2026-05-18T12:25:53.335082+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/U4ZPWALGUZW7JC4TMIH6ZDY4H5","json":"https://pith.science/pith/U4ZPWALGUZW7JC4TMIH6ZDY4H5.json","graph_json":"https://pith.science/api/pith-number/U4ZPWALGUZW7JC4TMIH6ZDY4H5/graph.json","events_json":"https://pith.science/api/pith-number/U4ZPWALGUZW7JC4TMIH6ZDY4H5/events.json","paper":"https://pith.science/paper/U4ZPWALG"},"agent_actions":{"view_html":"https://pith.science/pith/U4ZPWALGUZW7JC4TMIH6ZDY4H5","download_json":"https://pith.science/pith/U4ZPWALGUZW7JC4TMIH6ZDY4H5.json","view_paper":"https://pith.science/paper/U4ZPWALG","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=astro-ph/0504272&json=true","fetch_graph":"https://pith.science/api/pith-number/U4ZPWALGUZW7JC4TMIH6ZDY4H5/graph.json","fetch_events":"https://pith.science/api/pith-number/U4ZPWALGUZW7JC4TMIH6ZDY4H5/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/U4ZPWALGUZW7JC4TMIH6ZDY4H5/action/timestamp_anchor","attest_storage":"https://pith.science/pith/U4ZPWALGUZW7JC4TMIH6ZDY4H5/action/storage_attestation","attest_author":"https://pith.science/pith/U4ZPWALGUZW7JC4TMIH6ZDY4H5/action/author_attestation","sign_citation":"https://pith.science/pith/U4ZPWALGUZW7JC4TMIH6ZDY4H5/action/citation_signature","submit_replication":"https://pith.science/pith/U4ZPWALGUZW7JC4TMIH6ZDY4H5/action/replication_record"}},"created_at":"2026-05-18T04:18:02.773003+00:00","updated_at":"2026-05-18T04:18:02.773003+00:00"}