{"paper":{"title":"Observation of narrow-band $\\gamma$ radiation from a boron-doped diamond superlattice with an 855 MeV electron beam","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"A boron-doped diamond superlattice generates narrow-band 1.3 MeV gamma radiation under an 855 MeV electron beam.","cross_cats":["physics.app-ph"],"primary_cat":"physics.ins-det","authors_text":"David Eon, Hartmut Backe, Jos\\'e Baruchel, Lutz Kirste, Pascal Klag, Patrik Stra\\v{n}\\'ak, Pierre Everaere, R\\'ebecca Dowek, Simon B\\'enichou, Thu Nhi Tran Caliste, Werner Lauth","submitted_at":"2025-04-25T00:10:35Z","abstract_excerpt":"We report the first observation of narrow band 1.3 MeV $\\gamma$ radiation from a crystalline diamond micro-undulator. A diamond superlattice was grown with a periodical varying boron doping profile. Four sinusoidally deformed (110) periods resulted with a period length of 5.0 $\\mu$m and an amplitude of 0.098 nm. A channeling experiment was performed with the 855 MeV electron beam of the Mainz Microtron MAMI accelerator facility. A clear peak was detected with a large sodium iodide scintillation detector close to the expected photon energy of 1.28 MeV. Key characteristics of the peak, including"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"We report the first observation of narrow band 1.3 MeV γ radiation from a crystalline diamond micro-undulator. A clear peak was detected with a large sodium iodide scintillation detector close to the expected photon energy of 1.28 MeV.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The detected peak originates from the micro-undulator radiation mechanism in the sinusoidally deformed boron-doped diamond lattice rather than from background processes or other radiation channels, with the Monte Carlo simulation providing the necessary validation of this attribution.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"First observation of narrow-band 1.3 MeV gamma radiation from a boron-doped diamond micro-undulator with 5.0 μm period, confirmed by Monte Carlo simulation matching energy, width and intensity.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"A boron-doped diamond superlattice generates narrow-band 1.3 MeV gamma radiation under an 855 MeV electron beam.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"cc11530ba9f441e9c7d0d9f12ac367ff8ab3b8de4260d9c1d4e15684a1ac0fe0"},"source":{"id":"2504.17988","kind":"arxiv","version":4},"verdict":{"id":"33144d93-3a80-460a-a3f6-67ed32aacc3a","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-22T19:24:28.666741Z","strongest_claim":"We report the first observation of narrow band 1.3 MeV γ radiation from a crystalline diamond micro-undulator. A clear peak was detected with a large sodium iodide scintillation detector close to the expected photon energy of 1.28 MeV.","one_line_summary":"First observation of narrow-band 1.3 MeV gamma radiation from a boron-doped diamond micro-undulator with 5.0 μm period, confirmed by Monte Carlo simulation matching energy, width and intensity.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The detected peak originates from the micro-undulator radiation mechanism in the sinusoidally deformed boron-doped diamond lattice rather than from background processes or other radiation channels, with the Monte Carlo simulation providing the necessary validation of this attribution.","pith_extraction_headline":"A boron-doped diamond superlattice generates narrow-band 1.3 MeV gamma radiation under an 855 MeV electron beam."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2504.17988/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":29,"sample":[{"doi":"","year":2026,"title":"Observation of narrow-band $\\gamma$ radiation from a boron-doped diamond superlattice with an 855 MeV electron beam","work_id":"92f59c85-2691-4c83-bc12-b82aa316b81f","ref_index":1,"cited_arxiv_id":"2504.17988","is_internal_anchor":true},{"doi":"","year":null,"title":"For the undulator amplitudeA U = 0.0977 nm,λ U = 5.0µm, the undulator parameter amounts toK= γ·A U ·2π/λ U = 0.206. Fig. 4 depicts spectra taken with the sodium iodide detector (a) and (b), as well as","work_id":"39eb24cf-ef11-4b86-9abd-aec05cbabbf4","ref_index":2,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":null,"title":"direction was 182µm, a rather large value in com- parison with the undulator layer thickness of 14.1µm. Therefore, a huge channeling radiation contribution is present, although somehow suppressed due ","work_id":"2501ae91-2c50-4e77-ad81-dcfb35c91c02","ref_index":3,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2025,"title":"J. Kleemann, N. Pietralla, U. Friman-Gayer, J. Isaak, O. Papst, K. Prifti, V. Werner, A. D. Ayangeakaa, T. Beck, G. Col` o, M. L. Cort´ es, S. Finch, M. Fulghieri, D. Gribble, K. E. Ide, X. K.-H. Jame","work_id":"011e24d5-0788-4d47-ac8f-180dc06109cd","ref_index":4,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2022,"title":"A. Zilges, D. Balabanski, J. Isaak, and N. Pietralla, Progress in Particle and Nuclear Physics122, 103903 (2022)","work_id":"1612e84c-d5ab-4204-9d88-771160304684","ref_index":5,"cited_arxiv_id":"","is_internal_anchor":false}],"resolved_work":29,"snapshot_sha256":"a2fa412be8f0780004492824113b6fc6e50eb99a3e5e6a94701e1dd5793552a6","internal_anchors":1},"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"}