Measurement of oxygen atom density employing vacuum ultraviolet absorption spectroscopy with microdischarge hollow cathode lamp

The compact measurement system for absolute density of oxygen (O) atom has been developed, which employs a vacuum ultraviolet absorption spectroscopy (VUVAS) technique with a high-pressure microdischarge hollow cathode lamp (MHCL) as a light source. The influences of self-absorption, emission line profile of the MHCL, and background absorption of oxygen molecule (O_2) on the determination of absolute O atom density were taken into consideration. This system has been applied for measuring absolute O atom densities in an inductively coupled O_2 plasma. O atom densities were estimated to be on the order of 1*10^12–1*10^13 cm^-3 at an input power of 100 W and an O_2 pressure ranging from 1.3 to 26.7 Pa. The behavior of O atom density measured using VUVAS technique was consistent with that obtained by actinometry technique using O emission intensities of 844.6 nm and 777.4 nm lines. Moreover, the lifetime of O atom in the afterglow plasma has been measured. The decay curves of the O atom density were fitted with exponential functions. The extinction process of O atom in the inductively coupled O_2 plasma has been discussed.journal articl

Improved measurement of CP-violation parameters sin⁡2ϕ1 and |λ|, B meson lifetimes, and B0-B̅0 mixing parameter Δmd

journal articl

asper

Sonchus asper (Linnaeus) Hillprickly sow-thistle;prickly annual sow-thistle;spiny annual sow-thistle;spiny-leaved sow-thistle;spiny sow-thistle;rough sow-thistlelaiteron rude;laiteron piquant;laiteron âpre;laiteron épineuxSonchus asperDistrict de Qu'Appelle. Moosomin.Jardinag

Hume’s Argument of Duty and Justice: Motive to Observe the Rule of Justice

departmental bulletin pape

Muraoka Tsunetsuguʼs Kokutai (National Character) Thought: On His Lecture Notes “The Origin and Development of the Thought of Kokutai”

departmental bulletin pape

教育をめざす諸君へ

Text一般雑誌記事 / Articlearticl

Einige Probleme uber die Grundbuchordnung

論説application/pdfdepartmental bulletin pape

Recht und Zeit : Der massgebliche Zeitpunkt zur Besitmmung der Sittenwidrigkeit

論説application/pdfdepartmental bulletin pape

Comparison of extraction sign information by virtual 3D space image and notation

The modern city space is complicated, and the elements constituting space are various. And we obtain information necessary to decide a position and a course from many elements. The signature is very important as a method of the reporting, but the optimization of the signature is not done under the present conditions. Therefore we compared extraction sign information to be provided from notation with virtual 3D space image to optimize a sign.departmental bulletin pape

Application of TrOn at the iBeetle-Base.

<p>The figure shows a survey and detail views of the search interface of iBeetle Base that can be found at <a href="http://ibeetle-base.uni-goettingen.de" target="_blank">http://ibeetle-base.uni-goettingen.de</a>. A) An overview of the search page is depicted. The black arrow points to the number of search results for the entered search terms. B) A suggestion tree is displayed upon click on the respective button, showing the generic terms of the ontology with annotated features of the iBeetle screen downstream. In brackets, the number of occurrences of a given term in the database is given. C) After a search, an extract of the ontology can be displayed, which represents the terms which contributed to the search result. In this case the number in brackets indicates the number of hits for this term in the search results. D) Upon typing a search term, a completion list is displayed. The displayed terms are generic terms which match the entered term or its synonyms.</p