{"doi":"10.1063/4.0000207","title":"Solution phase high repetition rate laser pump x-ray probe picosecond hard x-ray spectroscopy at the Stanford Synchrotron Radiation Lightsource","abstract":"We present a dedicated end-station for solution phase high repetition rate (MHz) picosecond hard x-ray spectroscopy at beamline 15-2 of the Stanford Synchrotron Radiation Lightsource. A high-power ultrafast ytterbium-doped fiber laser is used to photoexcite the samples at a repetition rate of 640 kHz, while the data acquisition operates at the 1.28 MHz repetition rate of the storage ring recording data in an alternating on-off mode. The time-resolved x-ray measurements are enabled via gating the x-ray detectors with the 20 mA/70 ps camshaft bunch of SPEAR3, a mode available during the routine operations of the Stanford Synchrotron Radiation Lightsource. As a benchmark study, aiming to demonstrate the advantageous capabilities of this end-station, we have conducted picosecond Fe K-edge x-ray absorption spectroscopy on aqueous [FeII(phen)3]2+, a prototypical spin crossover complex that undergoes light-induced excited spin state trapping forming an electronic excited state with a 0.6–0.7 ns lifetime. In addition, we report transient Fe Kβ main line and valence-to-core x-ray emission spectra, showing a unique detection sensitivity and an excellent agreement with model spectra and density functional theory calculations, respectively. Notably, the achieved signal-to-noise ratio, the overall performance, and the routine availability of the developed end-station have enabled a systematic time-resolved science program using the monochromatic beam at the Stanford Synchrotron Radiation Lightsource.","journal":"Structural Dynamics","year":2023,"id":359865,"datarank":0.0,"base_score":0.0,"endowment":0.0,"self_citation_contribution":0.0,"citation_network_contribution":0.0,"self_endowment_contribution":0.0,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":10,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":0.9093,"is_data_producer":false,"deposit_databanks":null,"is_oa":true,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"2023-01-01","fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":1110839,"name":"Dean Skoien","orcid":"0009-0007-7049-4519","position":1,"is_corresponding":false},{"id":857627,"name":"Jacob A. Spies","orcid":"0000-0002-0148-4823","position":2,"is_corresponding":false},{"id":1066641,"name":"Angel T. Garcia‐Esparza","orcid":"0000-0002-4884-171X","position":3,"is_corresponding":false},{"id":780543,"name":"Benjamin D. Matson","orcid":"0000-0001-5733-0893","position":4,"is_corresponding":false},{"id":1110840,"name":"Jeff Corbett","orcid":"0000-0002-0087-1506","position":5,"is_corresponding":false},{"id":1110841,"name":"Kai Tian","orcid":"0000-0003-0268-244X","position":6,"is_corresponding":false},{"id":1110842,"name":"J. Safranek","orcid":"0000-0001-9130-7275","position":7,"is_corresponding":false},{"id":1110843,"name":"E. Granados","orcid":"0000-0002-6549-9303","position":8,"is_corresponding":false},{"id":1110844,"name":"Matthew L. Strader","orcid":"0009-0001-8081-7656","position":9,"is_corresponding":false},{"id":699367,"name":"Kelly J. Gaffney","orcid":"0000-0002-0525-6465","position":10,"is_corresponding":false},{"id":240879,"name":"Roberto Alonso‐Mori","orcid":"0000-0002-5357-0934","position":11,"is_corresponding":false},{"id":414297,"name":"Thomas Kröll","orcid":"0000-0003-2176-6905","position":12,"is_corresponding":false},{"id":414298,"name":"Dimosthenis Sokaras","orcid":"0000-0001-8117-1933","position":13,"is_corresponding":false},{"id":699358,"name":"Marco Reinhard","orcid":"0000-0001-7155-2011","position":0,"is_corresponding":true}],"reference_count":71,"raw_metadata":null,"created_at":"2026-07-19T01:13:57.361401Z","pmid":"37901682","pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}