We develop a pulsed hard x-ray K source at 17.4 keV produced by the interaction of a multi-terawatt peak power infrared femtosecond laser pulse with a thick molybdenum (Mo) target at a 100 Hz repetition rate. We measure the highest Mo K photon production reported to date corresponding to a K photon flux of 1×10 ph/(sr·s) and an estimated peak brightness of ∼2.5×10 ph/(s·mm·mrad(0.1% bandwidth)) at ∼5×10 W/cm driving laser intensity.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/OL.43.003574 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Concentrated Solar-Driven Catalytic CO2 Reduction: From Fundamental Research to Practical Applications.
ChemSusChem
January 2025
Southeast University, School of Chemistry and Chemical Engineering, Dong nan da xue Road No.2, Jiangning District, Nanjing, China., 211189, Nanjing, CHINA.
Concentrated solar-driven CO2 reduction is a breakthrough approach to combat climate crisis. Harnessing the in-situ coupling of high photon flux density and high thermal energy flow initiates multiple energy conversion pathways, such as photothermal, photoelectric, and thermoelectric processes, thereby enhancing the efficient activation of CO2. This review systematically presents the fundamental principles of concentrated solar systems, the design and classification of solar-concentrating devices, and industrial application case studies.
View Article and Find Full Text PDFMINFLUX Nanoscopy: A "Brilliant" Technique Promising Major Breakthrough.
Microsc Res Tech
January 2025
Dipartimento di Fisica, Università di Genova, Genova, Italy.
MINFLUX nanoscopy relies on the localization of single fluorophores with expected ~ 2 nm precision in 3D mapping, roughly one order of magnitude better than standard stimulated emission depletion microscopy or stochastic optical reconstruction microscopy. This "brilliant" technique takes advantage of specialized localization principles and algorithms that require only dim fluorescence signals with a minimum flux of photons; hence the name follows. With this level of performance, MINFLUX imaging and tracking should allow for the routine study of biological processes down to the molecular scale, revealing previously unresolved details in cell structures, such as the organization of calcium channels in muscle cells or the clustering of receptors in synapses.
View Article and Find Full Text PDFIntegral cross section measurement of the F( γ, n)F reaction for 12-20 MeV bremsstrahlung photons.
Appl Radiat Isot
January 2025
Radiopharmaceuticals Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India.
F radioactive isotope is widely used in PET imaging for nuclear medicine. Medical linear accelerators producing high-flux bremsstrahlung beams up to 20 MeV are commonly used in radiation therapy. Hence, the production of F through photon-induced channels will reduce many of the intricacies in transportation and handling.
View Article and Find Full Text PDFBiofeedback control of photosynthetic lighting using real-time monitoring of leaf chlorophyll fluorescence.
Physiol Plant
January 2025
Department of Horticulture, University of Georgia, Athens, GA, USA.
Optimizing photosynthetic lighting is essential for maximizing crop production and minimizing electricity costs in controlled environment agriculture (CEA). Traditional lighting methods often neglect the impact of environmental factors, crop type, and light acclimation on photosynthetic efficiency. To address this, a chlorophyll fluorescence-based biofeedback system was developed to adjust light-emitting diode (LED) intensity based on real-time plant responses, rather than using a fixed photosynthetic photon flux density (PPFD).
View Article and Find Full Text PDFLight energy-driven carbonic anhydrase mediate CO sequestration system with variable-temperature adaptability.
Int J Biol Macromol
January 2025
College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China; Institute of Biomass & Functional Materials, Shaanxi University of Science & Technology, Xi'an 710021, China. Electronic address:
The escalating atmospheric CO₂ concentration urgently demands ecologically friendly mitigation strategies. Compared to alternative catalysts, carbonic anhydrase (CA) demonstrates exceptionally high catalytic efficiency in CO₂ hydration reactions. Nevertheless, traditional CA immobilization techniques exhibit peak enzymatic activity exclusively at optimal temperatures, consequently constraining their effective application across diverse environmental thermal conditions in industrial settings.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!