{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:VWOFFHXSHBGJLDQALX4FZ5BRYM","short_pith_number":"pith:VWOFFHXS","canonical_record":{"source":{"id":"1907.02105","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2019-07-03T18:57:49Z","cross_cats_sorted":[],"title_canon_sha256":"2eb1863a79c6e82b09096db6213cfbfc5d44246684a7968f6b09c129ceff5901","abstract_canon_sha256":"e26a1f122aef9686fc0afc3ab6bda36230668b090d68ba22a18178339acc3eb6"},"schema_version":"1.0"},"canonical_sha256":"ad9c529ef2384c958e005df85cf431c3165a6f0ce9486cbba3dbf39b12a40688","source":{"kind":"arxiv","id":"1907.02105","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.02105","created_at":"2026-07-05T01:29:00Z"},{"alias_kind":"arxiv_version","alias_value":"1907.02105v2","created_at":"2026-07-05T01:29:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.02105","created_at":"2026-07-05T01:29:00Z"},{"alias_kind":"pith_short_12","alias_value":"VWOFFHXSHBGJ","created_at":"2026-07-05T01:29:00Z"},{"alias_kind":"pith_short_16","alias_value":"VWOFFHXSHBGJLDQA","created_at":"2026-07-05T01:29:00Z"},{"alias_kind":"pith_short_8","alias_value":"VWOFFHXS","created_at":"2026-07-05T01:29:00Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:VWOFFHXSHBGJLDQALX4FZ5BRYM","target":"record","payload":{"canonical_record":{"source":{"id":"1907.02105","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2019-07-03T18:57:49Z","cross_cats_sorted":[],"title_canon_sha256":"2eb1863a79c6e82b09096db6213cfbfc5d44246684a7968f6b09c129ceff5901","abstract_canon_sha256":"e26a1f122aef9686fc0afc3ab6bda36230668b090d68ba22a18178339acc3eb6"},"schema_version":"1.0"},"canonical_sha256":"ad9c529ef2384c958e005df85cf431c3165a6f0ce9486cbba3dbf39b12a40688","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:29:00.138667Z","signature_b64":"XAvNfUaoUckbGLPYcKvvOU0GJlvsdXwtjb21msUCTm8JG3Ehx6EUPJg3jcNAAAfDvoWWZAV6BMxug+t0g4fyCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ad9c529ef2384c958e005df85cf431c3165a6f0ce9486cbba3dbf39b12a40688","last_reissued_at":"2026-07-05T01:29:00.138128Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:29:00.138128Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1907.02105","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":"2026-07-05T01:29:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sGaPk3FVwvetSnSuuq5dlg4Q8yg0m/e0yHeYKriAtB8KLCxKamsH9W0SIzz+3KVJieWdoz7kFU/1X6fHqeB8Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T18:43:45.951946Z"},"content_sha256":"66970d5313f8089a084cbafd8d5d5e998f322b866f65569d0258b76739f7d271","schema_version":"1.0","event_id":"sha256:66970d5313f8089a084cbafd8d5d5e998f322b866f65569d0258b76739f7d271"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:VWOFFHXSHBGJLDQALX4FZ5BRYM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A new mechanism of direct coupling of laser energy to ions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.plasm-ph","authors_text":"Amita Das, Atul Kumar, Ayushi Vashistha, Chandrasekhar Shukla, Devshree Mandal","submitted_at":"2019-07-03T18:57:49Z","abstract_excerpt":"The well-known schemes (e.g. Brunel, resonance absorption, JxB heating etc.) couple laser energy to the lighter electron species of the plasma. In this work, a fundamentally new mechanism of laser energy absorption directly to the heavier ion species has been proposed. The mechanism relies on the difference between the ExB drifts of electron and ions in the oscillating electric field of the laser and an external magnetic field to create charge density perturbations. The proposed mechanism is verified with the help of Particle - In - Cell (PIC) simulations using OSIRIS4.0."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.02105","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1907.02105/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":"2026-07-05T01:29:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kpmP5kgupf8D5LM3yTOcocdRovWdlrt3d1IA7ssroF8o6F0i5jNuOt3OXrg64Qxg5Ab780CL5nsaG3NY+PPECQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T18:43:45.952605Z"},"content_sha256":"6501d7c2537b9a7345c832b1290eb2969e60257fdc53f6365034acbc2c704f6e","schema_version":"1.0","event_id":"sha256:6501d7c2537b9a7345c832b1290eb2969e60257fdc53f6365034acbc2c704f6e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VWOFFHXSHBGJLDQALX4FZ5BRYM/bundle.json","state_url":"https://pith.science/pith/VWOFFHXSHBGJLDQALX4FZ5BRYM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VWOFFHXSHBGJLDQALX4FZ5BRYM/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":"2026-08-10T18:43:45Z","links":{"resolver":"https://pith.science/pith/VWOFFHXSHBGJLDQALX4FZ5BRYM","bundle":"https://pith.science/pith/VWOFFHXSHBGJLDQALX4FZ5BRYM/bundle.json","state":"https://pith.science/pith/VWOFFHXSHBGJLDQALX4FZ5BRYM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VWOFFHXSHBGJLDQALX4FZ5BRYM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:VWOFFHXSHBGJLDQALX4FZ5BRYM","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":"e26a1f122aef9686fc0afc3ab6bda36230668b090d68ba22a18178339acc3eb6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2019-07-03T18:57:49Z","title_canon_sha256":"2eb1863a79c6e82b09096db6213cfbfc5d44246684a7968f6b09c129ceff5901"},"schema_version":"1.0","source":{"id":"1907.02105","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.02105","created_at":"2026-07-05T01:29:00Z"},{"alias_kind":"arxiv_version","alias_value":"1907.02105v2","created_at":"2026-07-05T01:29:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.02105","created_at":"2026-07-05T01:29:00Z"},{"alias_kind":"pith_short_12","alias_value":"VWOFFHXSHBGJ","created_at":"2026-07-05T01:29:00Z"},{"alias_kind":"pith_short_16","alias_value":"VWOFFHXSHBGJLDQA","created_at":"2026-07-05T01:29:00Z"},{"alias_kind":"pith_short_8","alias_value":"VWOFFHXS","created_at":"2026-07-05T01:29:00Z"}],"graph_snapshots":[{"event_id":"sha256:6501d7c2537b9a7345c832b1290eb2969e60257fdc53f6365034acbc2c704f6e","target":"graph","created_at":"2026-07-05T01:29:00Z","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/1907.02105/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The well-known schemes (e.g. Brunel, resonance absorption, JxB heating etc.) couple laser energy to the lighter electron species of the plasma. In this work, a fundamentally new mechanism of laser energy absorption directly to the heavier ion species has been proposed. The mechanism relies on the difference between the ExB drifts of electron and ions in the oscillating electric field of the laser and an external magnetic field to create charge density perturbations. The proposed mechanism is verified with the help of Particle - In - Cell (PIC) simulations using OSIRIS4.0.","authors_text":"Amita Das, Atul Kumar, Ayushi Vashistha, Chandrasekhar Shukla, Devshree Mandal","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2019-07-03T18:57:49Z","title":"A new mechanism of direct coupling of laser energy to ions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.02105","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":"sha256:66970d5313f8089a084cbafd8d5d5e998f322b866f65569d0258b76739f7d271","target":"record","created_at":"2026-07-05T01:29:00Z","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":"e26a1f122aef9686fc0afc3ab6bda36230668b090d68ba22a18178339acc3eb6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2019-07-03T18:57:49Z","title_canon_sha256":"2eb1863a79c6e82b09096db6213cfbfc5d44246684a7968f6b09c129ceff5901"},"schema_version":"1.0","source":{"id":"1907.02105","kind":"arxiv","version":2}},"canonical_sha256":"ad9c529ef2384c958e005df85cf431c3165a6f0ce9486cbba3dbf39b12a40688","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ad9c529ef2384c958e005df85cf431c3165a6f0ce9486cbba3dbf39b12a40688","first_computed_at":"2026-07-05T01:29:00.138128Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:29:00.138128Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XAvNfUaoUckbGLPYcKvvOU0GJlvsdXwtjb21msUCTm8JG3Ehx6EUPJg3jcNAAAfDvoWWZAV6BMxug+t0g4fyCg==","signature_status":"signed_v1","signed_at":"2026-07-05T01:29:00.138667Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.02105","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:66970d5313f8089a084cbafd8d5d5e998f322b866f65569d0258b76739f7d271","sha256:6501d7c2537b9a7345c832b1290eb2969e60257fdc53f6365034acbc2c704f6e"],"state_sha256":"e12a1770835ebe77ba2fc33df0d5c634454cc580a7dd3ca9b71e48c96963634e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"q0Wd7xXdL68FwxN5HJif0Dd8qQBBIjXSJdlPGEcs1xOWv/Zk9i4TDsUzxwAMBS+KrivZQMpMatgUVEKRBgcODA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T18:43:45.959018Z","bundle_sha256":"040a107d907aafd8dc57c232f052ec127a2826d3c81939387680263ce06c6a58"}}