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pro vyhledávání: '"R.E. Pixley"'
In 2006, a final result of a measurement of the gravitational constant $G$ performed by researchers at the University of Z\"urich was published. A value of $G=6.674\,252(122)\times 10^{-11}\,\mbox{m}^3\,\mbox{kg}^{-1}\,\mbox{s}^{-2}$ was obtained aft
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c4c2931cdef5014d93acfe9f19eeb67e
Publikováno v:
Journal of Physics D: Applied Physics. 28:A144-A148
High-resolution x-ray diffraction is a non-destructive method with an extremely high strain sensitivity. It is shown that its sensitivity is high enough to detect the influence of very small degrees of contamination by oxygen at the interface and the
Publikováno v:
Thin Solid Films. 228:23-26
A single-step cleaning procedure with a newly developed ultrahigh vacuum (UHV) compatible plasma source is described. Utilizing this source, an argon-hydrogen d.c. discharge between the heated filament (cathode) and the grounded chamber walls (anode)
Autor:
Juergen Ramm, R.E. Pixley
Publikováno v:
Surface and Coatings Technology. 52:187-193
Silicon nitride (Si 3 N 4 ) thin films deposited at low (300 °C or below) substrate temperatures by an ion plating process are characterized. Amorphous, stoichiometric layers with hydrogen contents below 1 at.% are obtained. The microhardness is mea
Publikováno v:
2008 Conference on Precision Electromagnetic Measurements Digest.
We have measured Newton's gravitational constant with a commercially available mass comparator. In this experiment, the difference of the gravitational force of 13,600 kg mercury on two 1.1 kg copper masses was measured with a relative statistical un
Publikováno v:
Physical Review D. 74
A precision measurement of the gravitational constant $G$ has been made using a beam balance. Special attention has been given to determining the calibration, the effect of a possible nonlinearity of the balance and the zero-point variation of the ba
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 63:56-58
RBS axial channeling is used to determine channel-angle differences with an accuracy approaching a few mdeg. Measurements in bulk Si and in a strained BaF2 are described.
Publikováno v:
MRS Proceedings. 259
Silicon wafers as obtained from the manufacturer are immersed in a large area argon/hydrogen plasma for surface cleaning. The plasma discharge is maintained between a heated cathode and the grounded process chamber at discharge voltages of about 30 V
Publikováno v:
MRS Proceedings. 198
We present new results on structural and electronic properties of epitaxial lead chalcogenides on Si-substrates. A stacked MBE-grown CaF2/BaF2 buffer of 200 nm thickness serves to overcome the large lattice- and thermal expansion mismatches. Lead cha
Autor:
R.E. Pixley, F. Hoop
Publikováno v:
Nuclear Instruments and Methods. 128:221-225
A 50 MHz beam pulser has been constructed for use with a Van de Graaf accelerator. An accurate analysis of the system based on measured properties of the undeflected beam shows that the rms (root-mean-square) pulse width is 14.5 ps. Measured time spe