  The GOLFNG (Global Oscillations at Low Frequency New Generation) instrument
is devoted to the search for solar gravity and acoustic modes, and also
chromospheric modes from space. This instrument which is a successor to
GOLF/SOHO will contribute to improve our knowledge of the dynamics of the solar
radiative zone. It is a 15 points resonant scattering spectrometer, working on
the D1 sodium line. A ground-based prototype is under construction to validate
the difficult issues. It will be installed at the Teide Observatory, on
Tenerife in 2006 to analyse the separation of the effects of the magnetic
turbulence of the line from the solar oscillations. We are prepared to put a
space version of this instrument including a capability of identification of
the modes, in orbit during the next decade. This instrument should be included
in the ILWS program as it offers a key to the improvement of our knowledge of
the solar core in combination with observations from SDO and PICARD. We hope to
determine the core rotation and magnetic field, through precise measurements of
oscillation mode frequency splittings. Understanding the magnetic field of the
radiative zone is important for progress in the study of solar activity
sources, an important player for the long-term Sun-Earth relationship.
