…When the incident particle is a hadron, multiple π mesons are produced by collision with the atomic nucleus, which is called a hard shower. When this occurs repeatedly in a substance and increases in number, it is called a nuclear cascade shower or N-cascade. In the case of gamma rays and electrons, the interaction with the electric field within the atom causes gamma rays to create electron-positron pairs, and electrons and positrons to repeatedly emit gamma rays, so the shower is a mixture of gamma rays, electrons, and positrons, and is called an electromagnetic cascade shower or electromagnetic cascade. … *Some of the terminology that refers to "nuclear cascade shower" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…入射粒子がハドロンの場合には原子核との衝突によってπ中間子の多重発生を起こし,ハードシャワーhard showerと呼ばれる。また,これが物質中で繰り返し発生して数を増す現象は,核カスケードシャワーnuclear cascade showerあるいはNカスケードN‐cascade,核カスケードという。γ線や電子の場合には原子内電場との相互作用によって,γ線は電子・陽電子対の創生を,また,電子,陽電子はγ線の放射を繰り返すため,シャワーの成分はγ線,電子,陽電子の混合したものとなり,電磁カスケードシャワーelectro‐magnetic cascade showerまたは電磁カスケードと呼ばれる。… ※「核カスケードシャワー」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
>>: Number of strokes - hidden
…Yoshida Masaharu's "Yoshida Masaharu, F...
…A masterpiece of Turkish folk literature, with t...
...In other words, Islam, which referred to faith...
A type of hunting rifle bullet, it is a special b...
Year of death: 7/7/1129 (7/24/1129) Year of birth:...
A stone used to sharpen and polish things. In a br...
The Congo River is the largest river in the world...
…In recent years, experimental work by young dire...
The oldest law code of ancient Rome. It was draft...
…Suspended matter includes fine particles derived...
Born October 23, 1844 in Saint-Boniface, Manitoba....
A normal tax levied by municipalities on land, bu...
One of the Nashiro (substitutes) established by th...
… The cities that were established in Western Eur...
It is an insect belonging to the family Cerambyci...