{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:DE5WPZKUEBWTRFQIWAJGBMNJDC","short_pith_number":"pith:DE5WPZKU","schema_version":"1.0","canonical_sha256":"193b67e554206d389608b01260b1a91897f0f89f63a75b5abf0f6e7b8ce9a094","source":{"kind":"arxiv","id":"1707.05184","version":3},"attestation_state":"computed","paper":{"title":"Feedback control optimisation of ESR experiments","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.chem-ph","authors_text":"Christiane R. Timmel, David L. Goodwin, Ilya Kuprov, William K. Myers","submitted_at":"2017-07-13T18:12:31Z","abstract_excerpt":"Numerically optimised microwave pulses are used to increase excitation efficiency and modulation depth in electron spin resonance experiments performed on a spectrometer equipped with an arbitrary waveform generator. The optimisation procedure is sample-specific and reminiscent of the magnet shimming process used in the early days of nuclear magnetic resonance -- an objective function (for example, echo integral in a spin echo experiment) is defined and optimised numerically as a function of the pulse waveform vector using noise-resilient gradient-free methods. We found that the resulting shap"},"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":"1707.05184","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2017-07-13T18:12:31Z","cross_cats_sorted":[],"title_canon_sha256":"54adee9f1161974996cec860f50be44e69253d094e801c2223824f268a7f9c5f","abstract_canon_sha256":"6717804bf807370723f98de249aa9fe1a1099fd6c54a75668ae718847a384fef"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:02:55.240067Z","signature_b64":"B75wp8PtMwPOCjB8M0OSpi3tm8v5AyVLi4h6r74eJAZ05hGX5pIEDHr+Tj9ao7MBSLSQjWuj0qlqV5uo3xj0CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"193b67e554206d389608b01260b1a91897f0f89f63a75b5abf0f6e7b8ce9a094","last_reissued_at":"2026-05-18T00:02:55.239436Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:02:55.239436Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Feedback control optimisation of ESR experiments","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.chem-ph","authors_text":"Christiane R. Timmel, David L. Goodwin, Ilya Kuprov, William K. Myers","submitted_at":"2017-07-13T18:12:31Z","abstract_excerpt":"Numerically optimised microwave pulses are used to increase excitation efficiency and modulation depth in electron spin resonance experiments performed on a spectrometer equipped with an arbitrary waveform generator. The optimisation procedure is sample-specific and reminiscent of the magnet shimming process used in the early days of nuclear magnetic resonance -- an objective function (for example, echo integral in a spin echo experiment) is defined and optimised numerically as a function of the pulse waveform vector using noise-resilient gradient-free methods. We found that the resulting shap"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.05184","kind":"arxiv","version":3},"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":"1707.05184","created_at":"2026-05-18T00:02:55.239529+00:00"},{"alias_kind":"arxiv_version","alias_value":"1707.05184v3","created_at":"2026-05-18T00:02:55.239529+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.05184","created_at":"2026-05-18T00:02:55.239529+00:00"},{"alias_kind":"pith_short_12","alias_value":"DE5WPZKUEBWT","created_at":"2026-05-18T12:31:10.602751+00:00"},{"alias_kind":"pith_short_16","alias_value":"DE5WPZKUEBWTRFQI","created_at":"2026-05-18T12:31:10.602751+00:00"},{"alias_kind":"pith_short_8","alias_value":"DE5WPZKU","created_at":"2026-05-18T12:31:10.602751+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/DE5WPZKUEBWTRFQIWAJGBMNJDC","json":"https://pith.science/pith/DE5WPZKUEBWTRFQIWAJGBMNJDC.json","graph_json":"https://pith.science/api/pith-number/DE5WPZKUEBWTRFQIWAJGBMNJDC/graph.json","events_json":"https://pith.science/api/pith-number/DE5WPZKUEBWTRFQIWAJGBMNJDC/events.json","paper":"https://pith.science/paper/DE5WPZKU"},"agent_actions":{"view_html":"https://pith.science/pith/DE5WPZKUEBWTRFQIWAJGBMNJDC","download_json":"https://pith.science/pith/DE5WPZKUEBWTRFQIWAJGBMNJDC.json","view_paper":"https://pith.science/paper/DE5WPZKU","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1707.05184&json=true","fetch_graph":"https://pith.science/api/pith-number/DE5WPZKUEBWTRFQIWAJGBMNJDC/graph.json","fetch_events":"https://pith.science/api/pith-number/DE5WPZKUEBWTRFQIWAJGBMNJDC/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/DE5WPZKUEBWTRFQIWAJGBMNJDC/action/timestamp_anchor","attest_storage":"https://pith.science/pith/DE5WPZKUEBWTRFQIWAJGBMNJDC/action/storage_attestation","attest_author":"https://pith.science/pith/DE5WPZKUEBWTRFQIWAJGBMNJDC/action/author_attestation","sign_citation":"https://pith.science/pith/DE5WPZKUEBWTRFQIWAJGBMNJDC/action/citation_signature","submit_replication":"https://pith.science/pith/DE5WPZKUEBWTRFQIWAJGBMNJDC/action/replication_record"}},"created_at":"2026-05-18T00:02:55.239529+00:00","updated_at":"2026-05-18T00:02:55.239529+00:00"}