Zobrazeno 1 - 10
of 110
pro vyhledávání: '"Sarma A"'
Publikováno v:
Review of Scientific Instruments. 75:3158-3163
We describe instrumentation and measurement procedures for performing microwave measurements on small metallic samples at dilution refrigerator temperatures using the microwave cavity perturbation technique. The quality factor Q of the lead-plated ca
Autor:
Satyabrata Raj, D. D. Sarma
Publikováno v:
Review of Scientific Instruments. 75:1020-1025
Availability of a low-energy, high current electron gun delivering a well-focused spot on the sample is essential for the inverse photoelectron spectroscopy. We have optimized an electron gun to obtain the maximum beam current at all electron kinetic
Autor:
P. R. Sarma
Publikováno v:
Review of Scientific Instruments. 74:3640-3644
Magnetic channels are used in cyclotrons and accelerators for extraction of ion beams. Passive magnetic channels use iron bars to lower the magnetic field locally and set up a field gradient. In order that the beam quality does not deteriorate, this
Publikováno v:
Review of Scientific Instruments. 73:4363-4368
The constant voltage anemometer (CVA) was used to calibrate a hot wire over a wide overheat range. Instead of the output voltage (E) of the anemometer which is normally used, at each test point a quantity represented by “pdr” equal to the ratio o
Publikováno v:
Review of Scientific Instruments. 73:1313-1317
An automated procedure has been developed for a constant voltage anemometer to obtain in situ heated and cold resistances of a hot wire in each measurement cycle. From these parameters mean velocity can be deduced in the presence of ambient flow temp
Publikováno v:
Review of Scientific Instruments. 72:2282-2287
Experimental observation has been carried out to see the effect of magnetic field and grid biasing voltage in controlling the sheath thickness in a magnetized plasma system. The experiment is carried out in a stainless steel chamber which is divided
Publikováno v:
Review of Scientific Instruments. 72:2011-2014
To obtain high efficiency in bunching ions one generally uses a multiharmonic buncher or a double drift buncher. Here we have explored the possiblity of using a triple drift bunching system to obtain still higher bunching efficiency. It consists of t
Publikováno v:
Review of Scientific Instruments. 71:2733-2736
Observations on steady state ion-rich sheath around a negatively biased grid in a double plasma device have been made in multicomponent plasma with negative ions. A hump in the potential profile is found to occur at the sheath edge. The characteristi
Publikováno v:
Review of Scientific Instruments. 70:2655-2660
Combined function magnets are often used in synchrotrons and beam lines. The field quality of such magnets depends mainly on the pole profile. A new method is described for determining the finite pole shapes of such magnets for obtaining field qualit
Publikováno v:
Review of Scientific Instruments
Review of Scientific Instruments, American Institute of Physics, 1998, 69 (9), pp.3223-3231. ⟨10.1063/1.1149087⟩
Review of Scientific Instruments, American Institute of Physics, 1998, 69 (9), pp.3223-3231. ⟨10.1063/1.1149087⟩
International audience; Software compensation correction for thermal lag of a hot wire in the application of a constant voltage anemometer (CVA) for turbulence measurements in the boundary layer of a supersonic wind tunnel has been demonstrated. The