Stark-Broadening of Neon I-Transitionswith Weak Electrical Field Dependence (2p 5 3s-2p 5 3p)The half widths of Stark-broadened Ne I spectral lines (2p 5 3 s--2p 5 3p) were measured in wall stabilized arc plasmas (pressure p= 1 atm, and p= 3 atm) consisting of several gas components (Ar 68%, Ne 27%, He 3%, H 2 2%). The theoretical half widths of two spectral lines (2= 6,266.50 ~, 2----6,163.59 ~)with known calculated broadening parameters according to Griem differ by a factor 1.8 to 1.9 from the measured widths. Within the errors of Griem's line broadening calculations of about 20% there was agreement between experimental and theoretical half widths regarding two other spectral lines (2= 5,881.90/~, 2 = 5,852.49 A). Calculated adiabatic widths are smaller than the widths according to Griem. Therefore in some cases the deviation of the adiabatic widths from the measured widths is smaller than the difference between Griem widths and experimental ones. Static quadratic coefficients of NeI transitions 2p s 3s--2p s 3p calculated from measured Stark-broadened lines showed wavelength displacements in the order of 0.005 A referring to an electrical field of 100 kV/cm. The determined coefficients are 102 times smaller than those values measurable by known methods of emission spectroscopy. EinfiihrungDer Stark-Effekt des Neon I-Spektrums ist ausffihrlich in mehreren Arbeiten yon Foster und Rowles 1 (1929), Ishida 2' 3 (1929) und Ryde 4-6 (1930) untersucht worden. Dabei stellte sich heraus, dab die Feldst/irkeabhfingigkeit ftir die Uberg/inge 2p 5 3s-2p 5 np* (Hauptquantenzahl n => 3) schwach ist und nur ffir Uberg/inge n > 5 meBbar war. Selbst wenn nach Ishida 3 Feldstfirken yon 650 kV/cm crreicht wurden, war ffir n =4 und 5 der Stark-Effckt nicht meBbar. Die Gr613c des Stark-Effektes hoch * In der Paschen-Notierung sind das die (Jbcrg/inge: 1 s--hp mit a_> 2.

No abstract

No abstract

No abstract

No abstract