{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:NC4LUBRKHJRIIMFEQEN3HQUFRG","short_pith_number":"pith:NC4LUBRK","canonical_record":{"source":{"id":"1708.05420","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2017-08-17T19:41:19Z","cross_cats_sorted":[],"title_canon_sha256":"fb361158da1a76e4b87b2679ec988f36e8e3cb3b5efe0680ff15ec704168f04a","abstract_canon_sha256":"228de0b35a526357e6a29c926f516776881eeb0678fbc58da201ace0dcdf9415"},"schema_version":"1.0"},"canonical_sha256":"68b8ba062a3a628430a4811bb3c28589abb664af6e725f37f232be8d47d5dd97","source":{"kind":"arxiv","id":"1708.05420","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.05420","created_at":"2026-05-18T00:19:27Z"},{"alias_kind":"arxiv_version","alias_value":"1708.05420v1","created_at":"2026-05-18T00:19:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.05420","created_at":"2026-05-18T00:19:27Z"},{"alias_kind":"pith_short_12","alias_value":"NC4LUBRKHJRI","created_at":"2026-05-18T12:31:31Z"},{"alias_kind":"pith_short_16","alias_value":"NC4LUBRKHJRIIMFE","created_at":"2026-05-18T12:31:31Z"},{"alias_kind":"pith_short_8","alias_value":"NC4LUBRK","created_at":"2026-05-18T12:31:31Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:NC4LUBRKHJRIIMFEQEN3HQUFRG","target":"record","payload":{"canonical_record":{"source":{"id":"1708.05420","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2017-08-17T19:41:19Z","cross_cats_sorted":[],"title_canon_sha256":"fb361158da1a76e4b87b2679ec988f36e8e3cb3b5efe0680ff15ec704168f04a","abstract_canon_sha256":"228de0b35a526357e6a29c926f516776881eeb0678fbc58da201ace0dcdf9415"},"schema_version":"1.0"},"canonical_sha256":"68b8ba062a3a628430a4811bb3c28589abb664af6e725f37f232be8d47d5dd97","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:19:27.260237Z","signature_b64":"NJm+FBmdfOaa1o6iNmlneAZwbhW/1TyNhk+sslXAnjgj27Fi1Blb8jdMyhLP6tkUzcYSG2c2FLTy6UcZaWFoBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"68b8ba062a3a628430a4811bb3c28589abb664af6e725f37f232be8d47d5dd97","last_reissued_at":"2026-05-18T00:19:27.259623Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:19:27.259623Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1708.05420","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":"2026-05-18T00:19:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cxetUiCdXwPri5PFeG1uDVyNlXcXs6dAyeW91J9pKPLAaZTyOuxLrW7tGcg6yNcQWRE+iKCJxUpjUi8fXTfyBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T20:25:21.427807Z"},"content_sha256":"f8e1959f8cb6be9ed5084926c2d1f785ab30e4694d1c637cd2ba78d6a03d79ab","schema_version":"1.0","event_id":"sha256:f8e1959f8cb6be9ed5084926c2d1f785ab30e4694d1c637cd2ba78d6a03d79ab"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:NC4LUBRKHJRIIMFEQEN3HQUFRG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A study of small impact parameter ion channeling effects in thin crystals","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.atom-ph","authors_text":"M. B. H. Breese, M. Motapothula","submitted_at":"2017-08-17T19:41:19Z","abstract_excerpt":"We have recorded channeling patterns produced by 1 to 2 MeV protons aligned with <111> axes in 55 nm thick silicon crystals which exhibit characteristic angular structure for deflection angles up to and beyond the axial critical angle, psi(a). Such large angular deflections are produced by ions incident on atomic strings with small impact parameters, resulting in trajectories which pass through several radial rings of atomic strings before exiting the thin crystal. Each ring may focus, steer or scatter the channeled ions in the transverse direction and the resulting characteristic angular stru"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.05420","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":"2026-05-18T00:19:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zW9XqVPTZX90PHqauq9JeTaWuB7H1D2BBSHbPahuWrIEpao4s88wD9NnpyJJgryR9kK4gKK6e4r/HJTGl1wMBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T20:25:21.428149Z"},"content_sha256":"17adb8ffe130be1d39688a16d718008db9c4ac485fa95fb0ffde3d076e7f13a0","schema_version":"1.0","event_id":"sha256:17adb8ffe130be1d39688a16d718008db9c4ac485fa95fb0ffde3d076e7f13a0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NC4LUBRKHJRIIMFEQEN3HQUFRG/bundle.json","state_url":"https://pith.science/pith/NC4LUBRKHJRIIMFEQEN3HQUFRG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NC4LUBRKHJRIIMFEQEN3HQUFRG/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":"2026-05-21T20:25:21Z","links":{"resolver":"https://pith.science/pith/NC4LUBRKHJRIIMFEQEN3HQUFRG","bundle":"https://pith.science/pith/NC4LUBRKHJRIIMFEQEN3HQUFRG/bundle.json","state":"https://pith.science/pith/NC4LUBRKHJRIIMFEQEN3HQUFRG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NC4LUBRKHJRIIMFEQEN3HQUFRG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:NC4LUBRKHJRIIMFEQEN3HQUFRG","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":"228de0b35a526357e6a29c926f516776881eeb0678fbc58da201ace0dcdf9415","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2017-08-17T19:41:19Z","title_canon_sha256":"fb361158da1a76e4b87b2679ec988f36e8e3cb3b5efe0680ff15ec704168f04a"},"schema_version":"1.0","source":{"id":"1708.05420","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.05420","created_at":"2026-05-18T00:19:27Z"},{"alias_kind":"arxiv_version","alias_value":"1708.05420v1","created_at":"2026-05-18T00:19:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.05420","created_at":"2026-05-18T00:19:27Z"},{"alias_kind":"pith_short_12","alias_value":"NC4LUBRKHJRI","created_at":"2026-05-18T12:31:31Z"},{"alias_kind":"pith_short_16","alias_value":"NC4LUBRKHJRIIMFE","created_at":"2026-05-18T12:31:31Z"},{"alias_kind":"pith_short_8","alias_value":"NC4LUBRK","created_at":"2026-05-18T12:31:31Z"}],"graph_snapshots":[{"event_id":"sha256:17adb8ffe130be1d39688a16d718008db9c4ac485fa95fb0ffde3d076e7f13a0","target":"graph","created_at":"2026-05-18T00:19:27Z","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":"We have recorded channeling patterns produced by 1 to 2 MeV protons aligned with <111> axes in 55 nm thick silicon crystals which exhibit characteristic angular structure for deflection angles up to and beyond the axial critical angle, psi(a). Such large angular deflections are produced by ions incident on atomic strings with small impact parameters, resulting in trajectories which pass through several radial rings of atomic strings before exiting the thin crystal. Each ring may focus, steer or scatter the channeled ions in the transverse direction and the resulting characteristic angular stru","authors_text":"M. B. H. Breese, M. Motapothula","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2017-08-17T19:41:19Z","title":"A study of small impact parameter ion channeling effects in thin crystals"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.05420","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:f8e1959f8cb6be9ed5084926c2d1f785ab30e4694d1c637cd2ba78d6a03d79ab","target":"record","created_at":"2026-05-18T00:19:27Z","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":"228de0b35a526357e6a29c926f516776881eeb0678fbc58da201ace0dcdf9415","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2017-08-17T19:41:19Z","title_canon_sha256":"fb361158da1a76e4b87b2679ec988f36e8e3cb3b5efe0680ff15ec704168f04a"},"schema_version":"1.0","source":{"id":"1708.05420","kind":"arxiv","version":1}},"canonical_sha256":"68b8ba062a3a628430a4811bb3c28589abb664af6e725f37f232be8d47d5dd97","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"68b8ba062a3a628430a4811bb3c28589abb664af6e725f37f232be8d47d5dd97","first_computed_at":"2026-05-18T00:19:27.259623Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:19:27.259623Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NJm+FBmdfOaa1o6iNmlneAZwbhW/1TyNhk+sslXAnjgj27Fi1Blb8jdMyhLP6tkUzcYSG2c2FLTy6UcZaWFoBg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:19:27.260237Z","signed_message":"canonical_sha256_bytes"},"source_id":"1708.05420","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f8e1959f8cb6be9ed5084926c2d1f785ab30e4694d1c637cd2ba78d6a03d79ab","sha256:17adb8ffe130be1d39688a16d718008db9c4ac485fa95fb0ffde3d076e7f13a0"],"state_sha256":"a08015c6ba282c770e3a5ca5a9fa89b107fe5d1a9f6be0f15cc1045931591593"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kKY1he+Vr5Ty1rtp3B4I8Ohj7cOMgPudHoX3e9VDjyG2QlUBdkS2YjQMS4Nhq2IkzWIQxsGWJcrLQetqroVTAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-21T20:25:21.430061Z","bundle_sha256":"2c9f475948c16f271562bef42159bdd7052d6f93f48cb2925ba8fb0ecd297e40"}}