Energy distributions of superthermal ions in regime with sawtooth oscillations during neutral beam injection at the Globus-M tokamak

Specific features of the energy distributions of fast ions during neutral beam injection at the Globus-М tokamak are considered. Different loss mechanisms that can lead to the formation of a specific shape of the energy spectrum of superthermal ions are analyzed. The effect of sawtooth oscillations on the loss of fast ions is discussed.     

Neutral Beam Current Drive in Globus-M Compact Spherical Tokamak

Plasma Physics Reports - The article presents research on neutral beam current drive in Globus-M compact spherical tokamak. The experiments were performed in the plasma current range of...     

First Globus-M2 Results

Plasma Physics Reports - Globus-M2—a new 1-Tesla spherical tokamak—was recently launched. The main features and research directions of this machine in scope of fusion–fission...     

Toroidal Alfvén Modes in the Plasma of the Globus-M Spherical Tokamak

Plasma Physics Reports - Results of experimental studies of toroidal Alfvén eigenmodes (TAEs) in the Globus-M spherical tokamak (R = 36 cm, a = 24 cm) are reported. The experiments were...     

Morphology and ultrastructure of Devonian prasinophycean algae (Chlorophyta)

The ultrastructure of three Devonian prasinophycean species (green algae): Inderites reticulatus (Naumova) Telnova, I. devonicus (Naumova) Telnova, and Tasmanites domanicus (Naumova) Telnova is described. Members of the genus Inderites are shown to have double-layer walls (outer homogeneous layer, and inner finely porous layer). The genus Tasmanites is characterized by single-layer (homogeneous) walls. All of the described Paleozoic Tasmanites have a similar ultrastructure. Species differ in shell thickness and distributional pattern of pores.     

Tentaculitids in palynological preparations: New evidence from the Famennian (Late Devonian) of Southern Timan

This is the first report of organic tentaculitid remains (zoomorphs) in palynological preparations of Famennian Age (Southern Timan, borehole Sosnovka-1). Earlier two similar finds have been described from the Frasnian of Poland as similar to embryonic and juvenile forms of dacryoconarids belonging to the orders Nowakiida and Stylionida.