Trinayan Sarmah

8 Questions 14 Answers 0 Followers

Questions related from Trinayan Sarmah

Why does in a thermal plasma, temperature of plasma does not increase with increase in current but density increases?

The plasma density was seen to increase from 2.0×1020 m-3 to 3.0×1020 m-3 for the full variation of the plasma current. Gas temperature was seen to get reduced with increasing plasma current,...

19 March 2018 7,117 9 View

While estimating ion flux for a plasma beam, which velocity one should consider i.e., plasma jet velocity or ion thermal velocity?

Plasma density multiplied by velocity gives ion flux, but the velocity consideration should be the plasma jet velocity (calculated from doppler shift) or the ion thermal velocity (depends on the...

20 February 2018 8,997 3 View

Why sizes of tungsten nanoparticles synthesized by thermal plasma technique are always bigger than other materials such as Al2O3, TiO2 etc.?

Sizes of some high temperature materials such as Alumina, Titanium oxide, Titanium nitride and Iron nanoparticles synthesized by Thermal plasma technique show sizes below 10 nm but very recently...

07 September 2016 6,222 6 View

What is the recommended degassing temperature (Thermal stability) for tungsten micron sized as well as nanoparticles?

Tungsten nano as well as micron sized particles were synthesized using thermal plasma method and now we want have BET analysis of that samples?

01 February 2016 3,023 1 View

Can anyone help me in analysis of this single crystal SAED pattern of tungsten oxide particles?

Basically i want to know the growth direction of the nanostructure.

05 October 2015 5,208 2 View

By what mechanism does recrystallization of tungsten occur from its melt?

Exposure of tungsten target to the high-density plasma jet was seen to produce a range of complex micro-structured morphologies (may be polyhedral particles, aggregated hopper or spherulitic...

21 May 2015 782 7 View

What morphological term can be given to this structure and what may be its formation mechanism?

Exposure of tungsten target to the high-density plasma jet was seen to produce a range of complex micro-structured morphologies ( may be polyhedral particles, aggregated hopper or spherulitic...

19 May 2015 2,889 5 View

What may be possible reason for bad fit while performing quantitative Rietveld refinement for tungsten phase?

Please find attached files(DAT and pcr files).

13 May 2015 9,093 4 View