{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:ZGAIBW7XIZOJG3RFKC7JHIVJP7","short_pith_number":"pith:ZGAIBW7X","canonical_record":{"source":{"id":"1706.02170","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2017-06-07T13:11:12Z","cross_cats_sorted":[],"title_canon_sha256":"72434f04157a55df74fa7584c327afade8dd6fad5ccab3c7085eaca8d886fdb8","abstract_canon_sha256":"706193e9f55c90e1eaeb9a5302b7c50f7d22b3e44fa38e3dcbe9b10e879a5363"},"schema_version":"1.0"},"canonical_sha256":"c98080dbf7465c936e2550be93a2a97ff9cd3283ebae6a4ce0bec870dcb6b4c6","source":{"kind":"arxiv","id":"1706.02170","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1706.02170","created_at":"2026-05-18T00:39:45Z"},{"alias_kind":"arxiv_version","alias_value":"1706.02170v2","created_at":"2026-05-18T00:39:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1706.02170","created_at":"2026-05-18T00:39:45Z"},{"alias_kind":"pith_short_12","alias_value":"ZGAIBW7XIZOJ","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_16","alias_value":"ZGAIBW7XIZOJG3RF","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_8","alias_value":"ZGAIBW7X","created_at":"2026-05-18T12:31:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:ZGAIBW7XIZOJG3RFKC7JHIVJP7","target":"record","payload":{"canonical_record":{"source":{"id":"1706.02170","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2017-06-07T13:11:12Z","cross_cats_sorted":[],"title_canon_sha256":"72434f04157a55df74fa7584c327afade8dd6fad5ccab3c7085eaca8d886fdb8","abstract_canon_sha256":"706193e9f55c90e1eaeb9a5302b7c50f7d22b3e44fa38e3dcbe9b10e879a5363"},"schema_version":"1.0"},"canonical_sha256":"c98080dbf7465c936e2550be93a2a97ff9cd3283ebae6a4ce0bec870dcb6b4c6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:39:45.991213Z","signature_b64":"ZC4R3yfgE8Mc/0AbvNIimRyo48hCs3Kkbm9hfCgoj+wrL3+5qTTgcCc4PCOLsleyVBSnZXtslbe7IkpI1zHzCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c98080dbf7465c936e2550be93a2a97ff9cd3283ebae6a4ce0bec870dcb6b4c6","last_reissued_at":"2026-05-18T00:39:45.990543Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:39:45.990543Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1706.02170","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:39:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"S+uQv+QW/oLBpNUtAo3ONMS5N2xek/O2ieGYzSFLWMPPmFEQOVIcPw1XHBVb2hr/ztkJo9J+ADw6Y7oWWukpDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T00:36:20.233243Z"},"content_sha256":"c67d3e2244b5de8530ddcd04426e20010b5324799f66590a4d8acec8993676d4","schema_version":"1.0","event_id":"sha256:c67d3e2244b5de8530ddcd04426e20010b5324799f66590a4d8acec8993676d4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:ZGAIBW7XIZOJG3RFKC7JHIVJP7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Size and Density Evolution of a Single Microparticle Embedded in a Plasma","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.plasm-ph","authors_text":"A. Piel, F. Greiner, H. Jung, O. H. Asnaz","submitted_at":"2017-06-07T13:11:12Z","abstract_excerpt":"This article presents two measurement techniques to determine the diameter of a single dust particle during plasma operation. Using long-distance microscopy (LDM), the particle is imaged from outside the plasma chamber. In combination with phase-resolved resonance measurements the development of the volume-averaged particle mass density is measured over several hours. The measurements show a significant decrease of mass density for polymethyl methacrylate (PMMA) particles due to a plasma etching process on the surface. This is explained by a core-shell model and is supported by a surface rough"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.02170","kind":"arxiv","version":2},"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":"2026-05-18T00:39:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/XYTa7BHtNJTREkXJkBdIHFhAg1RNhhpkW3CXg4Oo+uTEa11XF9RxawdayBkkoU13FDFFhRMO/C5AyuuvR3vDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T00:36:20.233737Z"},"content_sha256":"72570327682f5dea963fdef68b3fc69d43ef08dff01d1c25c3116c494ca32ed5","schema_version":"1.0","event_id":"sha256:72570327682f5dea963fdef68b3fc69d43ef08dff01d1c25c3116c494ca32ed5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZGAIBW7XIZOJG3RFKC7JHIVJP7/bundle.json","state_url":"https://pith.science/pith/ZGAIBW7XIZOJG3RFKC7JHIVJP7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZGAIBW7XIZOJG3RFKC7JHIVJP7/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":"2026-05-27T00:36:20Z","links":{"resolver":"https://pith.science/pith/ZGAIBW7XIZOJG3RFKC7JHIVJP7","bundle":"https://pith.science/pith/ZGAIBW7XIZOJG3RFKC7JHIVJP7/bundle.json","state":"https://pith.science/pith/ZGAIBW7XIZOJG3RFKC7JHIVJP7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZGAIBW7XIZOJG3RFKC7JHIVJP7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:ZGAIBW7XIZOJG3RFKC7JHIVJP7","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":"706193e9f55c90e1eaeb9a5302b7c50f7d22b3e44fa38e3dcbe9b10e879a5363","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2017-06-07T13:11:12Z","title_canon_sha256":"72434f04157a55df74fa7584c327afade8dd6fad5ccab3c7085eaca8d886fdb8"},"schema_version":"1.0","source":{"id":"1706.02170","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1706.02170","created_at":"2026-05-18T00:39:45Z"},{"alias_kind":"arxiv_version","alias_value":"1706.02170v2","created_at":"2026-05-18T00:39:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1706.02170","created_at":"2026-05-18T00:39:45Z"},{"alias_kind":"pith_short_12","alias_value":"ZGAIBW7XIZOJ","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_16","alias_value":"ZGAIBW7XIZOJG3RF","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_8","alias_value":"ZGAIBW7X","created_at":"2026-05-18T12:31:59Z"}],"graph_snapshots":[{"event_id":"sha256:72570327682f5dea963fdef68b3fc69d43ef08dff01d1c25c3116c494ca32ed5","target":"graph","created_at":"2026-05-18T00:39:45Z","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":"This article presents two measurement techniques to determine the diameter of a single dust particle during plasma operation. Using long-distance microscopy (LDM), the particle is imaged from outside the plasma chamber. In combination with phase-resolved resonance measurements the development of the volume-averaged particle mass density is measured over several hours. The measurements show a significant decrease of mass density for polymethyl methacrylate (PMMA) particles due to a plasma etching process on the surface. This is explained by a core-shell model and is supported by a surface rough","authors_text":"A. Piel, F. Greiner, H. Jung, O. H. Asnaz","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2017-06-07T13:11:12Z","title":"Size and Density Evolution of a Single Microparticle Embedded in a Plasma"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.02170","kind":"arxiv","version":2},"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:c67d3e2244b5de8530ddcd04426e20010b5324799f66590a4d8acec8993676d4","target":"record","created_at":"2026-05-18T00:39:45Z","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":"706193e9f55c90e1eaeb9a5302b7c50f7d22b3e44fa38e3dcbe9b10e879a5363","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2017-06-07T13:11:12Z","title_canon_sha256":"72434f04157a55df74fa7584c327afade8dd6fad5ccab3c7085eaca8d886fdb8"},"schema_version":"1.0","source":{"id":"1706.02170","kind":"arxiv","version":2}},"canonical_sha256":"c98080dbf7465c936e2550be93a2a97ff9cd3283ebae6a4ce0bec870dcb6b4c6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c98080dbf7465c936e2550be93a2a97ff9cd3283ebae6a4ce0bec870dcb6b4c6","first_computed_at":"2026-05-18T00:39:45.990543Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:39:45.990543Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZC4R3yfgE8Mc/0AbvNIimRyo48hCs3Kkbm9hfCgoj+wrL3+5qTTgcCc4PCOLsleyVBSnZXtslbe7IkpI1zHzCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:39:45.991213Z","signed_message":"canonical_sha256_bytes"},"source_id":"1706.02170","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c67d3e2244b5de8530ddcd04426e20010b5324799f66590a4d8acec8993676d4","sha256:72570327682f5dea963fdef68b3fc69d43ef08dff01d1c25c3116c494ca32ed5"],"state_sha256":"3806d0783dafb3de8572e1c8929a35781750b4c42f29473d8e3f7df9ebc94e32"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aDR2EADQXY7PmTVFIW7BN5Ljcpxz5LritF5zmzasWXKy7fr6RCbDSOE591xdYR+aAsLVllaJIR3UZyn56JrPCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T00:36:20.236618Z","bundle_sha256":"787fcf36e101bcd4862ebbec2d4cbadc2c7f0ab91d49386361b2c07a8e9b8cc9"}}