Zobrazeno 1 - 10
of 17
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
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. 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
Publikováno v:
Review of Scientific Instruments. 87:043508
Emissive Langmuir probe is one of the most efficient diagnostic tools available for plasma potential measurements. Extensive studies have been carried out in designing different kinds of conventional (electrically heated) emissive probes (CEPs) to es
Autor:
Robert W. Lankes, Garimella R. Sarma
Publikováno v:
Review of Scientific Instruments. 70:2384-2386
The operational features of an automated constant voltage anemometer (ACVA) designed for flight applications have been presented. Diagnostic voltage outputs are provided in ACVA, which will enable the calculation of in situ hot wire time constant and
Publikováno v:
Review of Scientific Instruments. 61:1436-1441
We describe modifications to an Oxford Model TLE 400 dilution refrigerator permitting measurements of microwave response at X‐band. Coupling to the cavity is accomplished with a Gordon coupler involving a 1/4‐in. access hole and a 1/4‐in. diele