Parametric Instability of a Broad-band Alfvén Wave: Nonlinear Evolution and Saturation

نویسندگان
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Observation of an Alfvén Wave Parametric Instability in a Laboratory Plasma.

A shear Alfvén wave parametric instability is observed for the first time in the laboratory. When a single finite ω/Ω_{i} kinetic Alfvén wave (KAW) is launched in the Large Plasma Device above a threshold amplitude, three daughter modes are produced. These daughter modes have frequencies and parallel wave numbers that are consistent with copropagating KAW sidebands and a low frequency nonresona...

متن کامل

Broad-band continuous-wave parametric wavelength conversion in silicon nanowaveguides.

We demonstrate highly broad-band frequency conversion via four-wave mixing in silicon nanowaveguides. Through appropriate engineering of the waveguide dimensions, conversion bandwidths greater than 150 nm are achieved and peak conversion efficiencies of -9.6 dB are demonstrated. Furthermore, utilizing fourth-order dispersion, wave-length conversion across four telecommunication bands from 1477 ...

متن کامل

Broad-band colour evolution of star clusters

We briefly review the main features in the broad-band colour evolution of star clusters, over the complete age interval from 10 to 10 yr. The emphasis is in the problem of age-dating distant young clusters (∼< 2 Gyr) from their integrated colours. It is shown that U−B and B−V are less sensitive to metallicity than colours involving red passbands, like V −I, at least up to ages of some few Gyr. ...

متن کامل

Broad-band photometric evolution of star clusters

I briefly introduce a database of models that describe the evolution of star clusters in several broad-band photometric systems. Models are based on the latest Padova stellar evolutionary tracks – now including the α-enhanced case and improved AGB models – and a revised library of synthetic spectra from model atmospheres. As of today, we have revised isochrones in Johnson-Cousins-Glass, HST/WFP...

متن کامل

Alfvén instability in a compressible flow.

A new ideal magnetohydrodynamic instability is presented. It is shown that linear incompressible Alfvénic disturbances can get over-reflected and exponentially amplified in compressible plasma flows. A simple and transparent stability criterion for a two-layer model is derived. The instability does not require a shear in the flow and may arise for rather moderate sub-Alfvénic flow speeds. It is...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Symposium - International Astronomical Union

سال: 2001

ISSN: 0074-1809

DOI: 10.1017/s007418090021989x