Collisional redistribution of hydrogen line radiation in low- and moderate-density magnetized plasmas

2021 ◽  
Vol 103 (5) ◽  
Author(s):  
J. Rosato
Keyword(s):  
Magnetized Plasmas ◽  
Hydrogen Line ◽  
Line Radiation ◽  
Moderate Density ◽  
Redistribution Of Hydrogen

scholarly journals Hydrogen-line observations on the coma cluster

1959 ◽  
Vol 9 ◽  
pp. 465-465
Author(s):  
C. A. Muller
Keyword(s):  
Coma Cluster ◽  
Hydrogen Line ◽  
Line Radiation ◽  
Antenna Temperature ◽  
Cluster Of Galaxies

In 1956 and 1958 Heeschen [1, 2] reported hydrogen-line radiation at 21 cm from the Coma cluster of galaxies. He found a maximum antenna temperature of 2 °K and gave a profile with a width of about 4 Mc/s. From his details, it seems clear that these results depend mainly on a large number of drift curves on a frequency of 1386.9 Mc/s, since the accuracy of other points of the profile was much lower. Because the intensity is low and near the limit of what can be observed with present-day receivers we decided to repeat some of the observations with the 21-cm equipment at Dwingeloo.

scholarly journals A 21 cm Survey of the Southern Milky Way

1959 ◽  
Vol 12 (3) ◽  
pp. 270 ◽  
Author(s):  
PJ Kerr ◽  
JV Hindman ◽  
CS Gum
Keyword(s):  
Milky Way ◽  
Hydrogen Line ◽  
Line Radiation

A study has been made of 21 cm hydrogen-line radiation around the Southern Milky Way, using a beamwidth of 1�.4 and a bandwidth of 40 kc/s (8�5 km/sec).

On the fluctuation of line radiation emitted during aluminum micro-pellet ablation in magnetized plasmas

1999 ◽  
Vol 41 (7) ◽  
pp. 881-898 ◽  
Author(s):  
G Kocsis ◽  
J S Bakos ◽  
R Burhenn ◽  
B Kardon ◽  
S Kálvin ◽  
...  
Keyword(s):  
Magnetized Plasmas ◽  
Line Radiation

scholarly journals Energetic flares on RS CVn stars

1989 ◽  
Vol 104 (2) ◽  
pp. 115-118
Author(s):  
J.G. Doyle ◽  
P.B. Byrne ◽  
G.H.J. van den Oord
Keyword(s):  
Transition Region ◽  
Temperature Interval ◽  
Magnetic Energy ◽  
Flare Activity ◽  
Hydrogen Line ◽  
Line Radiation ◽  
Rs Cvn Stars ◽  
Show Evidence ◽  
Radiative Losses ◽  
Flare Model

AbstractUltraviolet spectroscopic observations of the RS CVn star II Peg in February 1983 show evidence for flare activity in greatly enhanced chromospheric and transition region emission lines. The total radiative losses from the chromosphere and transition region (i.e. the temperature interval 4.0 ≤ log Te ≤ 5.4) during the flare is 3.1 1035 erg. Over the whole atmosphere (i.e. the temperature interval 4.0 ≤ log Te ≤ 8.0), we estimate total radiative losses of 2.4 1036 erg, (excluding hydrogen line radiation). At flare peak, the flare radiated 1.5 1032 erg s–1. Adopting a two-ribbon flare model, where the filament is located between the two stars of the system, we can have 2039(l/R⊙) erg of magnetic energy available, where l is the filament length and we have taken a magnetic field strength of 1000G. Therefore, only a small fraction of this magnetic energy need be converted into heating of the flare plasma.

Hydrogen line profiles at low densities

1984 ◽  
Vol 9 (4) ◽  
pp. 697-704 ◽  
Author(s):  
C. Stehlé ◽  
N. Feautrier
Keyword(s):  
Line Profiles ◽  
Hydrogen Line

Translocations In Space-Time and Simultaneous States of the Universe: Convergent Quantifications and Alternative Solutions from the Principles of Physics for the Challenges of “Time Travel” and “Parallel Universes”

2016 ◽  
pp. 4058-4069
Author(s):  
Michael A Persinger
Keyword(s):  
Single Photon ◽  
Rest Mass ◽  
Space Time ◽  
Hydrogen Line ◽  
Magnetic Forces ◽  
Universal Space ◽  
Potential Applications ◽  
Order Of Magnitude ◽  
Alternative Solutions ◽  
The Universe

                                Translation of four dimensional axes anywhere within the spatial and temporal boundaries of the universe would require quantitative values from convergence between parameters that reflect these limits. The presence of entanglement and volumetric velocities indicates that the initiating energy for displacement and transposition of axes would be within the upper limit of the rest mass of a single photon which is the same order of magnitude as a macroscopic Hamiltonian of the modified Schrödinger wave function. The representative metaphor is that any local 4-D geometry, rather than displaying restricted movement through Minkowskian space, would instead expand to the total universal space-time volume before re-converging into another location where it would be subject to cause-effect. Within this transient context the contributions from the anisotropic features of entropy and the laws of thermodynamics would be minimal.  The central operation of a fundamental unit of 10-20 J, the hydrogen line frequency, and the Bohr orbital time for ground state electrons would be required for the relocalized manifestation. Similar quantified convergence occurs for the ~1012 parallel states within space per Planck’s time which solve for phase-shift increments where Casimir and magnetic forces intersect.  Experimental support for these interpretations and potential applications is considered. The multiple, convergent solutions of basic universal quantities suggest that translations of spatial axes into adjacent spatial states and the transposition of four dimensional configurations any where and any time within the universe may be accessed but would require alternative perspectives and technologies.

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