Plasma oscillation

Japanese: プラズマ振動 - プラズマしんどう(英語表記)plasma oscillation
Plasma oscillation
The vibration of charged particles that make up plasma. It was discovered by I. Langmuir in 1928. Plasma is made up of electrons and positive ions, and when the density of each is uniform, no space charge is generated, but if an unevenness occurs for some reason, a positive or negative space charge is generated and an electric field is induced. The electrons and ions are subjected to the force from this electric field and begin to move in a way that will eliminate the uneven density, but due to inertia they go too far and create uneven density again, repeating the cycle. The vibration of electrons is called electron plasma vibration, and the vibration of ions is called ion plasma vibration. If the number of electrons per cm3 is expressed as ne , the electron plasma frequency fpe is in hertz.

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:
プラズマを構成している荷電粒子の振動。 1928年に I.ラングミュアによって発見された。プラズマは電子と正イオンとで構成されており,それぞれの密度が均一のときは空間電荷を生じないが,もしなんらかの原因によって不均一なところができると,正または負の空間電荷を生じ,電場が誘起される。電子とイオンはこの電場から力を受けて,密度の不均一をなくすように運動を始めるが,慣性のために行過ぎ,再び密度の不均一を生じて,これを繰返す。電子の振動を電子プラズマ振動,イオンの振動をイオンプラズマ振動という。 1cm3あたりの電子数を ne で表わすと,電子プラズマ振動数 fpe は ヘルツである。

出典 ブリタニカ国際大百科事典 小項目事典ブリタニカ国際大百科事典 小項目事典について 情報

<<:  plasma display

>>:  Plasmasphere - Plasma ken (English spelling)

Recommend

Interstate Commerce Act

This is an economic law in the United States, and...

Tenmei Famine

This is one of the three major famines of the Edo...

Imperial Household Agency - Kunaichou

In 1947, the Imperial Household Ministry became th...

Swimming in the sea

It is the act of bathing in the water on the coas...

Lin Song - Linga

Gagaku. Goryeo music Komagaku . Korean flat style ...

Dry lacquer wood carving

…Following this revival of woodcarving, in the ea...

Nihonbashi Fish Market - Nihonbashi Fish Market

This fish market was held in Nihonbashi from the e...

Takasaki [town] - Takasaki

A former town in Kitamorokata County in the southw...

musculus mentalis (English spelling) musculusmentalis

…There is a bone inside the chin (the mental tria...

Papal Palace Office

This was an extra-official position established in...

The Kishi Rebellion

...a military official of the Goryeo Dynasty in K...

Ishidaino

In the Edo period, taxes were paid in currency in...

Kami

Located in the southwest of Shizuoka Prefecture, ...

Transport number; transference number

When an electric field is applied to an electrolyt...

Chersonesos Taurike

… The city known in the Middle Ages as Cherson or...