Browsing Article by Subject "Magnetic fields"

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Effect of magnetic field tapering on whistler pumped free electron laser

Kumara, Manish (American Institute of Physics Inc., 2019-02-12)

An analytical formalism of whistler pumped free electron laser (FEL) with tapered magnetic field is developed. The tapering raises the efficiency of the device to 7% for typical parameters. The frequency and power of the ...
On Thermal-Pulse-Driven Plasma Flows in Coronal Funnels as Observed by the Hinode/EUV Imaging Spectrometer (EIS)

Srivastava, A.K.; Konkol, P.; Murawski, K.; and et. al. (Kluwer Academic Publishers, 2014-08-21)

Using one-arcsecond-slit-scan observations from the Hinode/EUV Imaging Spectrometer (EIS) on 5 February 2007, we find the plasma outflows in the open and expanding coronal funnels at the eastern boundary of AR 10940. The ...
Possible signature of Alfven wave dissipation ´ in the localized magnetic funnels of the equatorial solar corona

Dwivedi, Bhola N.; Srivastava, Abhishek Kumar; Mohan, Anita (Oxford University Press, 2014-05-08)

We analyse the Hinode/EIS 2"-spectroscopic scan data containing the spectral line formed at typical inner coronal temperature. The strong Fe XII 195.120 Å line shows the existence of funnel-like expanding flux-tubes which ...

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