{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:PPEYQRPKCEAVN5ECZ3VT7YAUGT","short_pith_number":"pith:PPEYQRPK","schema_version":"1.0","canonical_sha256":"7bc98845ea110156f482ceeb3fe01434c956754dc2c4ccd3206517ae065b042e","source":{"kind":"arxiv","id":"1801.08420","version":1},"attestation_state":"computed","paper":{"title":"Numerical modeling of laser-driven ion acceleration from near-critical gas targets","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.plasm-ph","authors_text":"Daniel Vizman, Dragos Tatomirescu, Emmanuel d'Humi\\`eres","submitted_at":"2018-01-24T11:45:02Z","abstract_excerpt":"In the past two decades, laser-accelerated ion sources and their applications have been intensely researched. Recently, it has been shown through experiments that proton beams with characteristics comparable to those obtained with solid targets can be obtained from gaseous targets. By means of Particle-In-Cell simulations, this paper studies in detail the effects of a near-critical density gradient on ion and electron acceleration after the interaction with ultra high intensity lasers. We can observe that the peak density of the gas jet has a significant influence on the spectrum features. As "},"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":"1801.08420","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2018-01-24T11:45:02Z","cross_cats_sorted":[],"title_canon_sha256":"e16ea5097e1b83ec3898feff6f1b51ee50f0084be8cf13973791f9d175eba5a3","abstract_canon_sha256":"e339b83810c992231b6b9827ef1583cfa6e4c0afe200b98757901c01c759ccc0"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:18:03.799670Z","signature_b64":"r1vlE5uPBJaqy3jJrP22qE06bhTOWrFehVR5BiFc0ZXn3CxZUM9BJKO3aYmsAc4DXPUIEV6mgmv+EKGCI7P1Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7bc98845ea110156f482ceeb3fe01434c956754dc2c4ccd3206517ae065b042e","last_reissued_at":"2026-05-18T00:18:03.799234Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:18:03.799234Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Numerical modeling of laser-driven ion acceleration from near-critical gas targets","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.plasm-ph","authors_text":"Daniel Vizman, Dragos Tatomirescu, Emmanuel d'Humi\\`eres","submitted_at":"2018-01-24T11:45:02Z","abstract_excerpt":"In the past two decades, laser-accelerated ion sources and their applications have been intensely researched. Recently, it has been shown through experiments that proton beams with characteristics comparable to those obtained with solid targets can be obtained from gaseous targets. By means of Particle-In-Cell simulations, this paper studies in detail the effects of a near-critical density gradient on ion and electron acceleration after the interaction with ultra high intensity lasers. We can observe that the peak density of the gas jet has a significant influence on the spectrum features. As "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.08420","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":"1801.08420","created_at":"2026-05-18T00:18:03.799309+00:00"},{"alias_kind":"arxiv_version","alias_value":"1801.08420v1","created_at":"2026-05-18T00:18:03.799309+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.08420","created_at":"2026-05-18T00:18:03.799309+00:00"},{"alias_kind":"pith_short_12","alias_value":"PPEYQRPKCEAV","created_at":"2026-05-18T12:32:46.962924+00:00"},{"alias_kind":"pith_short_16","alias_value":"PPEYQRPKCEAVN5EC","created_at":"2026-05-18T12:32:46.962924+00:00"},{"alias_kind":"pith_short_8","alias_value":"PPEYQRPK","created_at":"2026-05-18T12:32:46.962924+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/PPEYQRPKCEAVN5ECZ3VT7YAUGT","json":"https://pith.science/pith/PPEYQRPKCEAVN5ECZ3VT7YAUGT.json","graph_json":"https://pith.science/api/pith-number/PPEYQRPKCEAVN5ECZ3VT7YAUGT/graph.json","events_json":"https://pith.science/api/pith-number/PPEYQRPKCEAVN5ECZ3VT7YAUGT/events.json","paper":"https://pith.science/paper/PPEYQRPK"},"agent_actions":{"view_html":"https://pith.science/pith/PPEYQRPKCEAVN5ECZ3VT7YAUGT","download_json":"https://pith.science/pith/PPEYQRPKCEAVN5ECZ3VT7YAUGT.json","view_paper":"https://pith.science/paper/PPEYQRPK","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1801.08420&json=true","fetch_graph":"https://pith.science/api/pith-number/PPEYQRPKCEAVN5ECZ3VT7YAUGT/graph.json","fetch_events":"https://pith.science/api/pith-number/PPEYQRPKCEAVN5ECZ3VT7YAUGT/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/PPEYQRPKCEAVN5ECZ3VT7YAUGT/action/timestamp_anchor","attest_storage":"https://pith.science/pith/PPEYQRPKCEAVN5ECZ3VT7YAUGT/action/storage_attestation","attest_author":"https://pith.science/pith/PPEYQRPKCEAVN5ECZ3VT7YAUGT/action/author_attestation","sign_citation":"https://pith.science/pith/PPEYQRPKCEAVN5ECZ3VT7YAUGT/action/citation_signature","submit_replication":"https://pith.science/pith/PPEYQRPKCEAVN5ECZ3VT7YAUGT/action/replication_record"}},"created_at":"2026-05-18T00:18:03.799309+00:00","updated_at":"2026-05-18T00:18:03.799309+00:00"}