scholarly journals Development of a New Nonevaporable Getter Coating Using Oxygen-Free Palladium/Titanium, Surface Analysis by Synchrotron Radiation X-ray Photoelectron Spectroscopy, Residual Gas Analysis, and Evaluation of Pumping Speeds

2019 ◽  
Vol 62 (9) ◽  
pp. 568-573
Author(s):  
Tetsuya MIYAZAWA ◽  
Masashi KURIHARA ◽  
Shinya OHNO ◽  
Ayako HASHIMOTO ◽  
Yasuo NAKAYAMA ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Surface Analysis ◽  
Photoelectron Spectroscopy ◽  
Titanium Surface ◽  
Gas Analysis ◽  
X Ray ◽  
Analysis And Evaluation ◽  
Residual Gas

Surface Analysis by X-ray Photoelectron Spectroscopy of Sol−Gel Silica Modified with Covalently Bound Peptides

2007 ◽  
Vol 111 (40) ◽  
pp. 11850-11857 ◽  
Author(s):  
Sabrina S. Jedlicka ◽  
Jenna L. Rickus ◽  
Dmitry Y. Zemlyanov
Keyword(s):  
Surface Analysis ◽  
Photoelectron Spectroscopy ◽  
Sol Gel ◽  
X Ray ◽  
Covalently Bound

scholarly journals Surface Analysis of Nanocomplexes by X-ray Photoelectron Spectroscopy (XPS)

2017 ◽  
Vol 3 (6) ◽  
pp. 882-889 ◽  
Author(s):  
Efrat Korin ◽  
Natalya Froumin ◽  
Smadar Cohen
Keyword(s):  
Surface Analysis ◽  
Photoelectron Spectroscopy ◽  
X Ray

Comparative Study of Time-Dependent PAES and XPS on a Ni/Pd Surface

2017 ◽  
Vol 373 ◽  
pp. 313-316 ◽  
Author(s):  
Samantha Zimnik ◽  
Christian Piochacz ◽  
Sebastian Vohburger ◽  
Christoph Hugenschmidt
Keyword(s):  
Photoelectron Spectroscopy ◽  
Electron Spectroscopy ◽  
Auger Electron ◽  
Structural Changes ◽  
Time Dependent ◽  
Xps Analysis ◽  
Time Constants ◽  
X Ray ◽  
Residual Gas ◽  
Rule Out

We report on time-dependent Positron annihilation induced Auger Electron Spectroscopy (PAES) study on 0.5 monolayers (ML) Ni on polycrystalline Pd accompanied by complementary X-ray induced Photoelectron Spectroscopy (XPS). The normalized PAES spectra showed a significant decrease in the Ni intensity and an increase in the Pd intensity as a function of time. To rule out varying influence on the elements e.g. from surface contaminates due to the residual gas, a time-dependent XPS analysis was performed on pure Ni and Pd as well as to analyze the main contaminants C and O. The O fraction was found to be constant within the measurement time and the time constants for C significantly differ from those of Ni and Pd in the PAES data. Consequently, it was concluded that the PAES data show a superposition of C contamination and structural changes at the surface of Ni/Pd.

scholarly journals Laser power meters as an X-ray power diagnostic for LCLS-II

2018 ◽  
Vol 25 (1) ◽  
pp. 72-76 ◽  
Author(s):  
Philip Heimann ◽  
Stefan Moeller ◽  
Sergio Carbajo ◽  
Sanghoon Song ◽  
Georgi Dakovski ◽  
...  
Keyword(s):  
Free Electron Laser ◽  
Laser Power ◽  
High Vacuum ◽  
Average Power ◽  
Gas Analysis ◽  
Ultra High Vacuum ◽  
Beam Path ◽  
X Ray ◽  
High Repetition ◽  
Residual Gas

For the LCLS-II X-ray instruments, laser power meters are being developed as compact X-ray power diagnostics to operate at soft and tender X-ray photon energies. These diagnostics can be installed at various locations along an X-ray free-electron laser (FEL) beamline in order to monitor the transmission of X-ray optics along the beam path. In addition, the power meters will be used to determine the absolute X-ray power at the endstations. Here, thermopile power meters, which measure average power, and have been chosen primarily for their compatibility with the high repetition rates at LCLS-II, are evaluated. A number of characteristics in the soft X-ray range are presented including linearity, calibrations conducted with a photodiode and a gas monitor detector as well as ultra-high-vacuum compatibility tests using residual gas analysis. The application of these power meters for LCLS-II and other X-ray FEL sources is discussed.

Surface Analysis of Carbon–Hydrogen Bonds in Diamondlike Carbon Films by X-ray Photoelectron Spectroscopy

2009 ◽  
Vol 48 (9) ◽  
pp. 092304 ◽  
Author(s):  
Susumu Takabayashi ◽  
Keishi Okamoto ◽  
Tatsuyuki Nakatani ◽  
Hiroyuki Sakaue ◽  
Takayuki Takahagi
Keyword(s):  
Hydrogen Bonds ◽  
Surface Analysis ◽  
Photoelectron Spectroscopy ◽  
Carbon Films ◽  
X Ray ◽  
Diamondlike Carbon ◽  
Carbon Hydrogen Bonds
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