Theoretical calculation of soft X-ray laser gains for Li-like Ca ions

1993 ◽  
Author(s):  
Bai-fei Shen ◽  
Zhizhan Xu ◽  
Huaguo Teng ◽  
Wengqi Zhang ◽  
Yaolin Li
Keyword(s):  
Theoretical Calculation ◽  
X Ray ◽  
Ca Ions

scholarly journals X-Ray Diffraction and Theoretical Calculation–Supported Formation of Polymorphic Cocrystals Discovered Through Thermal Methods: A Case Study

2019 ◽  
Vol 108 (10) ◽  
pp. 3340-3347 ◽  
Author(s):  
Zhengzheng Zhou ◽  
Mónica Calatayud ◽  
Julia Contreras-García ◽  
Liang Li ◽  
Henry H.Y. Tong ◽  
...  
Keyword(s):  
Theoretical Calculation ◽  
X Ray Diffraction ◽  
Thermal Methods ◽  
X Ray

Determination of X-ray Elastic Constants in a Ti-14Al-21Nb Nb Alloy and a Ti-14Al-21Nb/SiC Metal Matrix Composite

1990 ◽  
Vol 34 ◽  
pp. 689-698 ◽  
Author(s):  
J. Jo ◽  
R. W. Hendricks ◽  
W. D. Brewer ◽  
Karen M. Brown
Keyword(s):  
Residual Stress ◽  
Plastic Deformation ◽  
Elastic Constant ◽  
Theoretical Calculation ◽  
Metal Matrix Composite ◽  
Elastic Constants ◽  
Metal Matrix ◽  
Intrinsic Value ◽  
X Ray

Residual stress values in a material are governed by the measurements of the atomic spacings in a specific crystallographic plane and the elastic constant for that plane. It has been reported that the value of the elastic constant depends on microstructure, preferred orientation, plastic deformation and morphology [1], Thus, the theoretical calculation of the elastic constant may deviate from the intrinsic value for a real alloy.

Crystallite modulus of double-stranded helices of isotactic poly(methyl methacrylate): the X-ray measurement and the theoretical calculation

Polymer ◽  
1999 ◽  
Vol 40 (12) ◽  
pp. 3345-3351 ◽  
Author(s):  
Sebastien Urbanek ◽  
Kohji Tashiro ◽  
Tatsuki Kitayama ◽  
Koichi Hatada
Keyword(s):  
Methyl Methacrylate ◽  
Theoretical Calculation ◽  
X Ray ◽  
Poly Methyl Methacrylate

Electronic structures of Ba1-xCaxTiO3studied by x-ray absorption spectroscopy and theoretical calculation

2001 ◽  
Vol 13 (48) ◽  
pp. 11087-11095 ◽  
Author(s):  
K Asokan ◽  
J C Jan ◽  
J W Chiou ◽  
W F Pong ◽  
M-H Tsai ◽  
...  
Keyword(s):  
Theoretical Calculation ◽  
Absorption Spectroscopy ◽  
Electronic Structures ◽  
X Ray ◽  
X Ray Absorption

scholarly journals OH Group Effect in the Stator of β-Diketones Arylhydrazone Rotary Switches

Chemistry ◽  
2020 ◽  
Vol 2 (2) ◽  
pp. 374-389 ◽  
Author(s):  
Silvia Hristova ◽  
Fadhil S. Kamounah ◽  
Aurelien Crochet ◽  
Nikolay Vassilev ◽  
Katharina M. Fromm ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Dft Calculations ◽  
Theoretical Calculation ◽  
Molecular Spectroscopy ◽  
Ortho Position ◽  
Intermolecular Hydrogen Bonding ◽  
Group Effect ◽  
Oh Groups ◽  
X Ray ◽  
E And Z Isomers

The properties of several hydrazon-diketone rotary switches with OH groups in the stators (2-(2-(2-hydroxy-4-nitrophenyl)hydrazono)-1-phenylbutane-1,3-dione, 2-(2-(2-hydroxyphenyl)hydrazono)-1-phenylbutane-1,3-dione and 2-(2-(4-hydroxyphenyl)hydrazono)-1-phenylbutane-1,3-dione) were investigated by molecular spectroscopy (UV-Vis and NMR), DFT calculations (M06-2X/TZVP) and X-ray analysis. The results show that, when the OH group is in ortho position, the E’ and Z’ isomers are preferred in DMSO as a result of a stabilizing intermolecular hydrogen bonding with the solvent. The availability, in addition, of a nitro group in para position increases the possibility of deprotonation of the OH group in the absence of water. All studied compounds showed a tendency towards formation of associates. The structure of the aggregates was revealed by theoretical calculation and confirmed by X-ray analysis.

X-ray and Auger transition from highly-ionized Ca ions

1999 ◽  
Author(s):  
K. R. Karim ◽  
L. Logan ◽  
C. P. Bhalla
Keyword(s):  
Auger Transition ◽  
X Ray ◽  
Ca Ions

Analysis of Twin Boundary in Single Crystal of Ni-Mn-Ga Martensite Using Powder Laboratory Diffractometer

2013 ◽  
Vol 203-204 ◽  
pp. 13-16
Author(s):  
Jan Drahokoupil ◽  
Ladislav Straka ◽  
Oleg Heczko
Keyword(s):  
Single Crystal ◽  
Theoretical Calculation ◽  
Diffraction Study ◽  
Twin Boundary ◽  
Full Description ◽  
X Ray Diffraction ◽  
Beam Position ◽  
X Ray ◽  
Martensitic Microstructure ◽  
Standard Powder

The presented paper describes X-ray diffraction study of Ni-Mn-Ga modulated martensite single crystal. A standard powder laboratory diffractometer equipped with texture cradle and monocapillary was found to be suitable and sufficient tool for this type of studies. Three different scans were performed to unambiguously identify the martensitic twin variants at selected place. From this identification and with the help of theoretical calculation full description of martensitic microstructure can be determined. In addition the effect of sample displacement on beam position on sample was derived.

Double Layered HA Coating, its Characterization and Preparation

1998 ◽  
Vol 550 ◽  
Author(s):  
P. Zhou ◽  
S. Asanami ◽  
H. Kawana ◽  
M. Hosonuma ◽  
H. Mitsui ◽  
...  
Keyword(s):  
Coating Layer ◽  
Clinical Applications ◽  
X Ray ◽  
Ha Coating ◽  
Coating Methods ◽  
Surface Contact Area ◽  
Ca Ions ◽  
Good Biocompatibility ◽  
Coating Procedure

AbstractHydroxyapatite (HA) has been universally used because of good biocompatibility. There are varieties of coating methods, however, they still have problems. The most significant problem is layer thickness. We introduced a new coating procedure to eliminate this difficulty.The characterization of the coating was studied by X-ray diffractometry, infrared spectroscopy, SEM and chemical analysis. Said examination indicated that the double layer consisted of carbonate HA and CaTiO3 and the thickness of the layer was 2-4 μm. The coating was performed on the inner surfaces of 50-200 μm sized pores and was also consistent in the smallest of the pores even those of 50 μm. Our results indicated that the coating layer was homogeneous and thin. In addition, both layers consisted of Ca ions. The consistency of coating into even the smallest pore size suggested that our method promises to have widespread clinical applications in artificial implants because of increased surface contact area.

Theoretical Calculation of Background in X-Ray Spectrometry for the Determination of Some Heavy Trace Elements

1991 ◽  
Vol 35 (B) ◽  
pp. 755-756
Author(s):  
Jean-Jacques Gruffat
Keyword(s):  
Trace Elements ◽  
Theoretical Calculation ◽  
Spectral Distribution ◽  
Geological Samples ◽  
X Ray ◽  
Correct Calculation ◽  
The Continuum

AbstractThe Kulenkampff-Kramers formula giving the spectral distribution of the continuum as a function of wavelength allows a correct calculation of background under the peak. It is only necessary to measure two backgrounds, one on each side of the peak, The true background under the peak is given by multiplying them by adequate coefficients and adding them up. This method has been applied to the determination of low amounts of Ce, La, Ba and Cs in geological samples.

Sign in / Sign up

Export Citation Format

Share Document