{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:7SOZLX4TQXBMA3J5OEJA3ALWGE","short_pith_number":"pith:7SOZLX4T","canonical_record":{"source":{"id":"1203.3310","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2012-03-15T10:37:11Z","cross_cats_sorted":[],"title_canon_sha256":"14a6f5d43e1f66c8f63a973417c2950751e4430fbda19c8dcb4514412535f510","abstract_canon_sha256":"99f1093d1e5a9c1a4e62081ef8c8803074662fd7e5ad0adbc7f522f797790626"},"schema_version":"1.0"},"canonical_sha256":"fc9d95df9385c2c06d3d71120d8176312dc4d408f088a8ab23d5897f389c9451","source":{"kind":"arxiv","id":"1203.3310","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.3310","created_at":"2026-05-18T04:00:02Z"},{"alias_kind":"arxiv_version","alias_value":"1203.3310v1","created_at":"2026-05-18T04:00:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.3310","created_at":"2026-05-18T04:00:02Z"},{"alias_kind":"pith_short_12","alias_value":"7SOZLX4TQXBM","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_16","alias_value":"7SOZLX4TQXBMA3J5","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_8","alias_value":"7SOZLX4T","created_at":"2026-05-18T12:26:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:7SOZLX4TQXBMA3J5OEJA3ALWGE","target":"record","payload":{"canonical_record":{"source":{"id":"1203.3310","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2012-03-15T10:37:11Z","cross_cats_sorted":[],"title_canon_sha256":"14a6f5d43e1f66c8f63a973417c2950751e4430fbda19c8dcb4514412535f510","abstract_canon_sha256":"99f1093d1e5a9c1a4e62081ef8c8803074662fd7e5ad0adbc7f522f797790626"},"schema_version":"1.0"},"canonical_sha256":"fc9d95df9385c2c06d3d71120d8176312dc4d408f088a8ab23d5897f389c9451","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:00:02.195197Z","signature_b64":"1r8rA+BhTPuM8jnLYMjUQJi1RxbsQ9sTjyOTDTwY/9LvbqkHAG2O771IjVpIwhNVtAWOUqBe8hUnMu/Jq+rmAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fc9d95df9385c2c06d3d71120d8176312dc4d408f088a8ab23d5897f389c9451","last_reissued_at":"2026-05-18T04:00:02.194416Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:00:02.194416Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1203.3310","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":"2026-05-18T04:00:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"35sKwMpRuh3/iD/TcGLnTf4sh4rz+ufgBXJPxeq7E7vBnazBTc53Bio3wb3lPbc3eo8EgN1/olZFJYZJfd0+Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T09:58:38.950940Z"},"content_sha256":"c12b1e3f86cfee295a2cd4774d7080f836403fd9a4b98679493164dedda08c6c","schema_version":"1.0","event_id":"sha256:c12b1e3f86cfee295a2cd4774d7080f836403fd9a4b98679493164dedda08c6c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:7SOZLX4TQXBMA3J5OEJA3ALWGE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Enhancement of Betatron radiation from laser-driven Ar clustering gas","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.plasm-ph","authors_text":"D. Z. Li, J. L. Ma, J. R. Zhao, J. Y. Mao, J. Zhang, K. Huang, L. M. Chen, L. Zhang, N. Hafz, W. C. Yan, W. M. Wang, X. Lu, Y. Ma, Y. T. Li, Z. D. Hu, Z. M. Sheng, Z. Y. Wei","submitted_at":"2012-03-15T10:37:11Z","abstract_excerpt":"Bright betatron x-ray has been generated using an Ar clustering gas jet target irradiated with a 3 TW ultra-high contrast laser. The measured emission flux with photon energy > 2.4 keV reaches 2\\times10^8 photons/shot. It is ten-fold enhancement comparing to the emission flux produced by using gas target in the same laser parameters. Observation shows that much larger electron beam charge and divergence angle lead to this improvement. Simulations point to the existence of cluster in gas results in the increasing of electron injection and much larger wiggling amplitude in wake-field, enriching "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.3310","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":"2026-05-18T04:00:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6bCc5h+3QgLNcK6zLcAigxhmiEMDN/eF2XBbOBWJuu2Wy1TD6jg03EQYCq17xhSb4YF8y8p48nbL9HvHCXafCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T09:58:38.951380Z"},"content_sha256":"b071c8c8c79be786a6e1646ee2369294853de48c1de0c5f281a9cdc351c6f695","schema_version":"1.0","event_id":"sha256:b071c8c8c79be786a6e1646ee2369294853de48c1de0c5f281a9cdc351c6f695"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7SOZLX4TQXBMA3J5OEJA3ALWGE/bundle.json","state_url":"https://pith.science/pith/7SOZLX4TQXBMA3J5OEJA3ALWGE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7SOZLX4TQXBMA3J5OEJA3ALWGE/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":"2026-08-05T09:58:38Z","links":{"resolver":"https://pith.science/pith/7SOZLX4TQXBMA3J5OEJA3ALWGE","bundle":"https://pith.science/pith/7SOZLX4TQXBMA3J5OEJA3ALWGE/bundle.json","state":"https://pith.science/pith/7SOZLX4TQXBMA3J5OEJA3ALWGE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7SOZLX4TQXBMA3J5OEJA3ALWGE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:7SOZLX4TQXBMA3J5OEJA3ALWGE","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":"99f1093d1e5a9c1a4e62081ef8c8803074662fd7e5ad0adbc7f522f797790626","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2012-03-15T10:37:11Z","title_canon_sha256":"14a6f5d43e1f66c8f63a973417c2950751e4430fbda19c8dcb4514412535f510"},"schema_version":"1.0","source":{"id":"1203.3310","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.3310","created_at":"2026-05-18T04:00:02Z"},{"alias_kind":"arxiv_version","alias_value":"1203.3310v1","created_at":"2026-05-18T04:00:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.3310","created_at":"2026-05-18T04:00:02Z"},{"alias_kind":"pith_short_12","alias_value":"7SOZLX4TQXBM","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_16","alias_value":"7SOZLX4TQXBMA3J5","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_8","alias_value":"7SOZLX4T","created_at":"2026-05-18T12:26:58Z"}],"graph_snapshots":[{"event_id":"sha256:b071c8c8c79be786a6e1646ee2369294853de48c1de0c5f281a9cdc351c6f695","target":"graph","created_at":"2026-05-18T04:00:02Z","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":"Bright betatron x-ray has been generated using an Ar clustering gas jet target irradiated with a 3 TW ultra-high contrast laser. The measured emission flux with photon energy > 2.4 keV reaches 2\\times10^8 photons/shot. It is ten-fold enhancement comparing to the emission flux produced by using gas target in the same laser parameters. Observation shows that much larger electron beam charge and divergence angle lead to this improvement. Simulations point to the existence of cluster in gas results in the increasing of electron injection and much larger wiggling amplitude in wake-field, enriching ","authors_text":"D. Z. Li, J. L. Ma, J. R. Zhao, J. Y. Mao, J. Zhang, K. Huang, L. M. Chen, L. Zhang, N. Hafz, W. C. Yan, W. M. Wang, X. Lu, Y. Ma, Y. T. Li, Z. D. Hu, Z. M. Sheng, Z. Y. Wei","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2012-03-15T10:37:11Z","title":"Enhancement of Betatron radiation from laser-driven Ar clustering gas"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.3310","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:c12b1e3f86cfee295a2cd4774d7080f836403fd9a4b98679493164dedda08c6c","target":"record","created_at":"2026-05-18T04:00:02Z","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":"99f1093d1e5a9c1a4e62081ef8c8803074662fd7e5ad0adbc7f522f797790626","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2012-03-15T10:37:11Z","title_canon_sha256":"14a6f5d43e1f66c8f63a973417c2950751e4430fbda19c8dcb4514412535f510"},"schema_version":"1.0","source":{"id":"1203.3310","kind":"arxiv","version":1}},"canonical_sha256":"fc9d95df9385c2c06d3d71120d8176312dc4d408f088a8ab23d5897f389c9451","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fc9d95df9385c2c06d3d71120d8176312dc4d408f088a8ab23d5897f389c9451","first_computed_at":"2026-05-18T04:00:02.194416Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:00:02.194416Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1r8rA+BhTPuM8jnLYMjUQJi1RxbsQ9sTjyOTDTwY/9LvbqkHAG2O771IjVpIwhNVtAWOUqBe8hUnMu/Jq+rmAw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:00:02.195197Z","signed_message":"canonical_sha256_bytes"},"source_id":"1203.3310","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c12b1e3f86cfee295a2cd4774d7080f836403fd9a4b98679493164dedda08c6c","sha256:b071c8c8c79be786a6e1646ee2369294853de48c1de0c5f281a9cdc351c6f695"],"state_sha256":"f23201be515b06b75405fb060fe50b8fa44a5dfd94349e41e2fa0400b5a16586"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ma7D+CuoBmNlepRbNSNNqXhrxkTMvkTUluNUbeOLGxfkzgUmVu9geWDt5RZn9n9C+zauize4iY2dNHzBnolUBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T09:58:38.955288Z","bundle_sha256":"e71a83d8de408255ed5ffbcd8ef3b748ed69fe2d72f9740a52e106688c51c240"}}