{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:F3G4VHWKJPK7GH5AFDYXEDPTUQ","short_pith_number":"pith:F3G4VHWK","canonical_record":{"source":{"id":"1810.09559","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2018-10-02T09:26:03Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"cd38a8742b418e729e03b3332578cf7d14a3cfb4a7830611d214eae718b51693","abstract_canon_sha256":"9e4156d858cd19e26eef07610daf13ebcdc370307c9f481adf08c8c5078a96fc"},"schema_version":"1.0"},"canonical_sha256":"2ecdca9eca4bd5f31fa028f1720df3a406cc870ed2438efaecd390610d6bf00c","source":{"kind":"arxiv","id":"1810.09559","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.09559","created_at":"2026-07-05T00:01:32Z"},{"alias_kind":"arxiv_version","alias_value":"1810.09559v1","created_at":"2026-07-05T00:01:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.09559","created_at":"2026-07-05T00:01:32Z"},{"alias_kind":"pith_short_12","alias_value":"F3G4VHWKJPK7","created_at":"2026-07-05T00:01:32Z"},{"alias_kind":"pith_short_16","alias_value":"F3G4VHWKJPK7GH5A","created_at":"2026-07-05T00:01:32Z"},{"alias_kind":"pith_short_8","alias_value":"F3G4VHWK","created_at":"2026-07-05T00:01:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:F3G4VHWKJPK7GH5AFDYXEDPTUQ","target":"record","payload":{"canonical_record":{"source":{"id":"1810.09559","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2018-10-02T09:26:03Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"cd38a8742b418e729e03b3332578cf7d14a3cfb4a7830611d214eae718b51693","abstract_canon_sha256":"9e4156d858cd19e26eef07610daf13ebcdc370307c9f481adf08c8c5078a96fc"},"schema_version":"1.0"},"canonical_sha256":"2ecdca9eca4bd5f31fa028f1720df3a406cc870ed2438efaecd390610d6bf00c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:01:32.425795Z","signature_b64":"YRMRgb5dWBtuCr13z78ATFVdgJXMlJ9cQhXhufF+CbOC0AsUnFxlFYZhZ4IMwJrMdLtrSReyvFgRW28pxlkmDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2ecdca9eca4bd5f31fa028f1720df3a406cc870ed2438efaecd390610d6bf00c","last_reissued_at":"2026-07-05T00:01:32.425285Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:01:32.425285Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1810.09559","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":"2026-07-05T00:01:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TDSgps3LMfeHOFKQfsRch+BSzorWDE/KpXGHbOSbjkJp+b0/rkittvt6MXkWbmFMghEODths3BBnecTsAOKVAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T08:29:58.235904Z"},"content_sha256":"a424ddcf3ed3f1b031a568067105f5a8d29394e99256820b0fae551894e265c4","schema_version":"1.0","event_id":"sha256:a424ddcf3ed3f1b031a568067105f5a8d29394e99256820b0fae551894e265c4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:F3G4VHWKJPK7GH5AFDYXEDPTUQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Design and development of a low temperature, inductance based high frequency ac susceptometer","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"physics.ins-det","authors_text":"A. Elfassi, C. Johansson, C. Jonasson, D. Margineda, E. Riordan, F. Ahrentorp, F. Dell'ova, G.M. Klemencic, J. Blomgren, S. Michel, S.R. Giblin","submitted_at":"2018-10-02T09:26:03Z","abstract_excerpt":"We report on the development of an induction based low temperature high frequency ac susceptometer capable of measuring at frequencies up to 3.5 MHz and at temperatures between 2 K and 300 K. Careful balancing of the detection coils and calibration have allowed a sample magnetic moment resolution of $5\\times10^{-10} Am^2$ at 1 MHz. We will discuss the design and characterization of the susceptometer, and explain the calibration process. We also include some example measurements on the spin ice material CdEr$_2$S$_4$ and iron oxide based nanoparticles to illustrate functionality."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.09559","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1810.09559/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T00:01:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TVUyqGMNmnlq2v/pgNTLnpoYbpXex4/T8y+HuoFj0tDNOB9+MrDsVmdoDc0fx4c8+QQgMAaAbjbz8wPA5ZNXDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T08:29:58.236283Z"},"content_sha256":"361fb9ba27eb9f7274a17ce8703461846fa23fd91ee80c1baa7769e67e0b94ee","schema_version":"1.0","event_id":"sha256:361fb9ba27eb9f7274a17ce8703461846fa23fd91ee80c1baa7769e67e0b94ee"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/F3G4VHWKJPK7GH5AFDYXEDPTUQ/bundle.json","state_url":"https://pith.science/pith/F3G4VHWKJPK7GH5AFDYXEDPTUQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/F3G4VHWKJPK7GH5AFDYXEDPTUQ/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":"2026-07-07T08:29:58Z","links":{"resolver":"https://pith.science/pith/F3G4VHWKJPK7GH5AFDYXEDPTUQ","bundle":"https://pith.science/pith/F3G4VHWKJPK7GH5AFDYXEDPTUQ/bundle.json","state":"https://pith.science/pith/F3G4VHWKJPK7GH5AFDYXEDPTUQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/F3G4VHWKJPK7GH5AFDYXEDPTUQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:F3G4VHWKJPK7GH5AFDYXEDPTUQ","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":"9e4156d858cd19e26eef07610daf13ebcdc370307c9f481adf08c8c5078a96fc","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2018-10-02T09:26:03Z","title_canon_sha256":"cd38a8742b418e729e03b3332578cf7d14a3cfb4a7830611d214eae718b51693"},"schema_version":"1.0","source":{"id":"1810.09559","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.09559","created_at":"2026-07-05T00:01:32Z"},{"alias_kind":"arxiv_version","alias_value":"1810.09559v1","created_at":"2026-07-05T00:01:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.09559","created_at":"2026-07-05T00:01:32Z"},{"alias_kind":"pith_short_12","alias_value":"F3G4VHWKJPK7","created_at":"2026-07-05T00:01:32Z"},{"alias_kind":"pith_short_16","alias_value":"F3G4VHWKJPK7GH5A","created_at":"2026-07-05T00:01:32Z"},{"alias_kind":"pith_short_8","alias_value":"F3G4VHWK","created_at":"2026-07-05T00:01:32Z"}],"graph_snapshots":[{"event_id":"sha256:361fb9ba27eb9f7274a17ce8703461846fa23fd91ee80c1baa7769e67e0b94ee","target":"graph","created_at":"2026-07-05T00:01:32Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1810.09559/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report on the development of an induction based low temperature high frequency ac susceptometer capable of measuring at frequencies up to 3.5 MHz and at temperatures between 2 K and 300 K. Careful balancing of the detection coils and calibration have allowed a sample magnetic moment resolution of $5\\times10^{-10} Am^2$ at 1 MHz. We will discuss the design and characterization of the susceptometer, and explain the calibration process. We also include some example measurements on the spin ice material CdEr$_2$S$_4$ and iron oxide based nanoparticles to illustrate functionality.","authors_text":"A. Elfassi, C. Johansson, C. Jonasson, D. Margineda, E. Riordan, F. Ahrentorp, F. Dell'ova, G.M. Klemencic, J. Blomgren, S. Michel, S.R. Giblin","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2018-10-02T09:26:03Z","title":"Design and development of a low temperature, inductance based high frequency ac susceptometer"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.09559","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:a424ddcf3ed3f1b031a568067105f5a8d29394e99256820b0fae551894e265c4","target":"record","created_at":"2026-07-05T00:01:32Z","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":"9e4156d858cd19e26eef07610daf13ebcdc370307c9f481adf08c8c5078a96fc","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2018-10-02T09:26:03Z","title_canon_sha256":"cd38a8742b418e729e03b3332578cf7d14a3cfb4a7830611d214eae718b51693"},"schema_version":"1.0","source":{"id":"1810.09559","kind":"arxiv","version":1}},"canonical_sha256":"2ecdca9eca4bd5f31fa028f1720df3a406cc870ed2438efaecd390610d6bf00c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2ecdca9eca4bd5f31fa028f1720df3a406cc870ed2438efaecd390610d6bf00c","first_computed_at":"2026-07-05T00:01:32.425285Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:01:32.425285Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YRMRgb5dWBtuCr13z78ATFVdgJXMlJ9cQhXhufF+CbOC0AsUnFxlFYZhZ4IMwJrMdLtrSReyvFgRW28pxlkmDg==","signature_status":"signed_v1","signed_at":"2026-07-05T00:01:32.425795Z","signed_message":"canonical_sha256_bytes"},"source_id":"1810.09559","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a424ddcf3ed3f1b031a568067105f5a8d29394e99256820b0fae551894e265c4","sha256:361fb9ba27eb9f7274a17ce8703461846fa23fd91ee80c1baa7769e67e0b94ee"],"state_sha256":"ef81563f6bbb5968ced7fd05074139e90fb5078c2eb9f700f250e00e624baf6b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rYVdOAX6wpwVUSCjpAVfhWnMVTgFNQRyuknaKWSicqZCNxxyIofoZRJH5mBxOP15ub/GSkks1lTgO2OBr/64AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T08:29:58.238323Z","bundle_sha256":"a0da75a8411247d14d435051a73de9b52454e5e9e4b0f4a097b8640a562d33b6"}}