Analysis of the spectral properties of free electron lasers in X-RAY and other bands
Sign Up to like & getrecommendations! Published in 2021 at "Radiation Physics and Chemistry"
DOI: 10.1016/j.radphyschem.2021.109698
Abstract: Abstract Analytical formalism for the description of free electron laser (FEL) spectrum is proposed with account for the electron beam size, divergences, beam energy spread, the off-axis deflection and the periodic harmonic and non-periodic constant… read more here.
Keywords: free electron; radiation; fel; electron ... See more keywords
Polarization control of a free-electron laser oscillator using helical undulators of opposite helicities
Sign Up to like & getrecommendations! Published in 2020 at "Physical review accelerators and beams"
DOI: 10.1103/physrevaccelbeams.23.060702
Abstract: Polarized photon beams provide a unique experimental tool for the study of various polarization-dependent physical processes. Here, we report the experimental demonstration of full polarization control of an oscillator free-electron laser (FEL) using helical undulators… read more here.
Keywords: fel; opposite helicities; polarization; free electron ... See more keywords
ASO Visual Abstract: Upstaging of Fibroepithelial Lesions—A Single-Institution Experience
Sign Up to like & getrecommendations! Published in 2022 at "Annals of Surgical Oncology"
DOI: 10.1245/s10434-021-11040-8
Abstract: Fibroepithelial lesion of the breast (FEL) can pose a diagnostic challenge with a core needle biopsy (CNB) because cellular fibroadenoma is difficult to distinguish from phyllodes tumor (PT). In this 10-year single-institution experience with FEL… read more here.
Keywords: institution experience; fel; single institution; cnb ... See more keywords
石榴子石Fe 3+ 含量电子探针原位分析:Flank Method方法的实例应用
Sign Up to like & getrecommendations! Published in 2019 at "Acta Petrologica Sinica"
DOI: 10.18654/1000-0569/2019.04.05
Abstract: 电子探针分析技术主要应用于对物质进行快速无损的定性、定量分析，是材料科学和地质学领域最基础和重要的研究手段。而利用电子探针对矿物中不同价态Fe的含量进行原位定量分析，更是具有非常重要的科学意义。近来发展起来的可进行Fe3+含量定量分析的电子探针Flank Method测试方法，相比早期的实验方法具有更高的准确度和精确性。该方法主要是通过定义Fe的特征X射线L能级谱线峰位的峰侧位置（flank position），对应了不同价态Fe吸收谱线的差值线谱（difference spectrum）中强度计数最大值（FeLα*）和最小值（FeLβ*）的位置，从而避免了在早期实验中，一般通过直接测量Fe的L能级峰位（FeLα和FeLβ）可能导致的测试不确定性。同时，该测试方法通过对电子探针谱仪系统进行实时的位移误差校正，确保其在某一个稳定的实验条件（周期）下具有可重现性（精确度）。在本文中，我们根据北京大学造山带与地壳演化教育部重点实验室的JEOL JXA-8100型号电子探针的实际性能状态，在前人建立的实验步骤基础上，进行了测试流程的自适性改进和修正，建立了更符合本实验室实际情况的电子探针Flank Method测试方法，用于分析石榴子石中的Fe3+含量。通过对已知Fe3+含量的标准石榴子石样品进行检测验证，确定了该方法的可行性、可靠性以及可重复性。在对天然样品的分析中，我们选择了来自我国天山、拉萨和北祁连的洋壳俯冲类型中低温（超）高压榴辉岩中的石榴子石样品，对其进行了Fe3+含量（环带）的分析。结果显示，石榴子石中Fe3+含量可作为一个可靠的氧逸度指示剂，其（环带）变化很好地对应了榴辉岩寄主岩石的变质演化轨迹，反映了在板片俯冲过程中，榴辉岩的氧逸度具有降低的趋势。 read more here.
Keywords: fel; method flank; method; flank method ... See more keywords
Few-Cycle Infrared Pulse Evolving in FEL Oscillators and Its Application to High-Harmonic Generation for Attosecond Ultraviolet and X-ray Pulses
Sign Up to like & getrecommendations! Published in 2021 at "Atoms"
DOI: 10.3390/atoms9010015
Abstract: Generation of few-cycle optical pulses in free-electron laser (FEL) oscillators has been experimentally demonstrated in FEL facilities based on normal-conducting and superconducting linear accelerators. Analytical and numerical studies have revealed that the few-cycle FEL lasing… read more here.
Keywords: cycle; generation; fel; fel oscillators ... See more keywords
Novel Type of Tetranitrosyl Iron Salt: Synthesis, Structure and Antibacterial Activity of Complex [FeL’2(NO)2][FeL’L”(NO)2] with L’-thiobenzamide and L”-thiosulfate
Sign Up to like & getrecommendations! Published in 2022 at "Molecules"
DOI: 10.3390/molecules27206886
Abstract: In this work a new donor of nitric oxide (NO) with antibacterial properties, namely nitrosyl iron complex of [Fe(C6H5C-SNH2)2(NO)2][Fe(C6H5C-SNH2)(S2O3)(NO)2] composition (complex I), has been synthesized and studied. Complex I was produced by the reduction of… read more here.
Keywords: antibacterial activity; fel; iron; thiosulfate ... See more keywords
Comparison of Bacterial Expression Systems Based on Potato Virus Y-like Particles for Vaccine Generation
Sign Up to like & getrecommendations! Published in 2022 at "Vaccines"
DOI: 10.3390/vaccines10040485
Abstract: Plant-based virus-like particle (VLP) vaccines have been studied for years, demonstrating their potential as antigen-presenting platforms. In this paper, we describe the development of, and compare between, simple Escherichia coli-based antigen display platforms for the… read more here.
Keywords: virus like; fel; potato virus; generation ... See more keywords