Near-Infrared Absorbing Azo Dyes: Synthesis and X-ray Crystallographic and Spectral Characterization of Monoazopyrroles, Bisazopyrroles, and a Boron−Azopyrrole Complex

2009 ◽  
Vol 74 (15) ◽  
pp. 5237-5243 ◽  
Author(s):  
Yan Li ◽  
Brian O. Patrick ◽  
David Dolphin
Keyword(s):  
Azo Dyes ◽  
Near Infrared ◽  
Spectral Characterization ◽  
X Ray

scholarly journals Characterization of conichalcite by SEM, FTIR, Raman and electronic reflectance spectroscopy

2005 ◽  
Vol 69 (2) ◽  
pp. 155-167 ◽  
Author(s):  
B. J. Reddy ◽  
R. L. Frost ◽  
W. N. Martens
Keyword(s):  
Near Infrared ◽  
Adsorbed Water ◽  
Reflectance Spectroscopy ◽  
Sem Images ◽  
X Ray ◽  
Near Ir ◽  
Ir Reflectance ◽  
Yavapai County ◽  
Ir Bands

AbstractThe mineral conichalcite from the western part of Bagdad mine, Bagdad, Eureka District, Yavapai County, Arizona, USA has been characterized by electronic, near-infrared (NIR), Raman and infrared (IR) spectroscopy. Scanning electron microscopy (SEM) images show that the mineral consists of bundles of fibres. Calculations based on the results of the energy dispersive X-ray analyses on a stoichiometric basis show the substitution of arsenate by 12 wt.% of phosphate in the mineral. Raman and IR bands are assigned in terms of the fundamental modes of AsO43− and PO43− molecules and are related to the mineral structure. Near-IR reflectance spectroscopy shows the presence of adsorbed water and hydroxyl units in the mineral. The Cu(II) coordination polyhedron in conichalcite can have at best pseudo-tetragonal geometry. The crystal field and tetragonal field parameters of the Cu(II) complex were calculated and found to agree well with the values reported for known tetragonal distortion octahedral complexes.

Spectral characterization of flash and high flux x-ray radiographic sources with a magnetic Compton spectrometer

2021 ◽  
Vol 92 (8) ◽  
pp. 083102
Author(s):  
M. Espy ◽  
M. Klasky ◽  
M. James ◽  
D. Moir ◽  
J. Mendez ◽  
...  
Keyword(s):  
Spectral Characterization ◽  
High Flux ◽  
X Ray

Characterization of soft X-ray FEL pulse duration with two-color photoelectron spectroscopy

2020 ◽  
Vol 27 (5) ◽  
pp. 1362-1365
Author(s):  
Shigeki Owada ◽  
Mizuho Fushitani ◽  
Akitaka Matsuda ◽  
Hikaru Fujise ◽  
Yuuma Sasaki ◽  
...  
Keyword(s):  
Pulse Duration ◽  
Photoelectron Spectroscopy ◽  
Free Electron Laser ◽  
Cross Correlation ◽  
Near Infrared ◽  
Arrival Time ◽  
Full Width ◽  
Half Maximum ◽  
X Ray

The pulse duration of soft X-ray free-electron laser (FEL) pulses of SACLA BL1 (0.2–0.3 nC per bunch, 0.5–0.8 MeV) were characterized by photoelectron sideband measurements. The intensity of the He 1 s−1 photoelectron sidebands generated by a near-infrared femtosecond laser was measured as a function of the time delay between the two pulses using an arrival time monitor. From the width of the cross-correlation trace thus derived, the FEL pulse duration was evaluated to be 28 ± 5 fs full width at half-maximum in the photon energy range between 40 eV and 120 eV.

Synthesis and spectral characterization of some new azo dyes and their metal complexes

2006 ◽  
Vol 32 (1) ◽  
pp. 102-106 ◽  
Author(s):  
Rafet Kılınçarslan ◽  
Emin Erdem ◽  
Hasan Kocaokutgen
Keyword(s):  
Metal Complexes ◽  
Azo Dyes ◽  
Spectral Characterization
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