Parametric Study of a Continuous Scanning Method Used to Characterize an Acoustic Field

Author(s):  
V. V. N. Sriram Malladi ◽  
Kevin L. Lefeave ◽  
Pablo A. Tarazaga
2008 ◽  
Vol 92 (3) ◽  
pp. 541-545 ◽  
Author(s):  
Tae Woo Lim ◽  
Yong Son ◽  
Dong-Yol Yang ◽  
Hong-Jin Kong ◽  
Kwang-Sup Lee ◽  
...  

1988 ◽  
Vol 02 (03n04) ◽  
pp. 421-425 ◽  
Author(s):  
S. L. YUAN ◽  
J. W. LI ◽  
W. WANG ◽  
Q. Z. RAN ◽  
G. G. ZHENG ◽  
...  

The Bi-Sr-Ca-Cu-O superconductors with the nominal composition (1113) were prepared. An orthorhombic unit cell (a = 0.544 nm , b = 0.543 nm , c = 3.07 nm ) was determined by X-ray diffraction. The resistance transition curve shows that the sample has an onset around 110 K and the zero resistance temperature at 85 K. The mutual inductance measurement also shows a two-step transition which correspond to two superconducting phases as well as that in the resistive transition. The specific heat measurement was performed in the range of 56 K to 130 K by the continuous scanning method. A simple extrapolation of the curve was made from below and from above Tc to yield ΔC = 45 mJ/g.K and ΔC/Tc = 0.49 mJ/g.K .2 From these values, the Sommerfeld constant γ and the Debye temperature θ D were estimated.


2012 ◽  
Vol 26 (26) ◽  
pp. 1250140 ◽  
Author(s):  
ZHIEN ZHU ◽  
YEWEN ZHANG ◽  
ZHENLIAN AN ◽  
FEIHU ZHENG

The trap levels of Al 2 O 3 nano-powder doped LDPE with different Al 2 O 3 contents are investigated by PSD technique. The variation of trap depth in the doped LDPE can be qualitatively estimated by PSD spectra in continuous scanning method, and the distribution of trap levels in the samples can be quantitatively described in step scanning method. It is indicated that the trap levels of LDPE can be evidently deepened by Al 2 O 3 nano-powder doping with the content more than 0.1 wt%. According to the relative reports on the effect of nano-powder doping to space charge injection, it is considered that the suppression of space charge is probably correlated to the deeper trap levels in Al 2 O 3 nano-powder doped LDPE.


2008 ◽  
Vol 32 (5) ◽  
pp. 396-401 ◽  
Author(s):  
Tae-Woo Lim ◽  
Yong Son ◽  
Dong-Yol Yang ◽  
Hong-Jin Kong ◽  
Kwang-Sup Lee ◽  
...  

AIP Advances ◽  
2016 ◽  
Vol 6 (10) ◽  
pp. 105014 ◽  
Author(s):  
Jieqiong Lin ◽  
Xian Jing ◽  
Xiaoqin Zhou ◽  
Xu Zheng ◽  
Rui Gao ◽  
...  

1988 ◽  
Vol 02 (07) ◽  
pp. 885-889 ◽  
Author(s):  
S.L. YUAN ◽  
J.W. LI ◽  
W. WANG ◽  
Q.Z. RAN ◽  
G.G. ZHENG ◽  
...  

The Bi-Sr-Ca-Cu-O superconductor with the nominal composition (1113) were prepared. An orthorhombic unit cell (a=0.544 nm , b=0.543 nm , c=3.07 nm ) was determined by X-ray diffraction. The resistance transition curve shows that the sample has an onset around 110K and the zero resistance temperature at 85K. The mutual inductance measurement also shows a two-step transition which correspond to two superconducting phases as well as that in the resistive transition. The specific heat measurement was performed in the range of 56K to 130K by continuous scanning method. A simple extrapolation of the curve was made both from below and above T c to yield ΔC=45 mj /g. K and ΔC/T c =0.49 mj /g. K 2. From these values, the Sommerfeld constant γ and the Debye temperature θ D were estimated.


Author(s):  
R. Levi-Setti ◽  
J.M. Chabala ◽  
Y.L. Wang

Finely focused beams extracted from liquid metal ion sources (LMIS) provide a wealth of secondary signals which can be exploited to create high resolution images by the scanning method. The images of scanning ion microscopy (SIM) encompass a variety of contrast mechanisms which we classify into two broad categories: a) Emission contrast and b) Analytical contrast.Emission contrast refers to those mechanisms inherent to the emission of secondaries by solids under ion bombardment. The contrast-carrying signals consist of ion-induced secondary electrons (ISE) and secondary ions (ISI). Both signals exhibit i) topographic emission contrast due to the existence of differential geometric emission and collection effects, ii) crystallographic emission contrast, due to primary ion channeling phenomena and differential oxidation of crystalline surfaces, iii) chemical emission or Z-contrast, related to the dependence of the secondary emission yields on the Z and surface chemical state of the target.


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