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单词 Raman Effect
释义

Raman Effect

中文百科

拉曼效应 Raman scattering

(重定向自Raman Effect)

拉曼效应英语:Raman effect),也称拉曼散射(Raman scattering),一种光子的非弹性散射现象,1928年由印度物理学家钱德拉塞卡拉·拉曼发现,指光波在被散射后频率发生变化的现象。

当光线从一个原子或分子散射出来时,绝大多数的光子,都是弹性散射的,这称为瑞利散射。在瑞利散射下,散射出来的光子,跟射入时的光子,它的能量、频率与波长是相同的。然而,有一小部份散射的光子(大约是一千万个光子中会出现一个),散射后的频率会产生变化,通常是低于射入时的光子频率,原因是入射光子和介质分子之间发生能量交换。这即是拉曼散射。

英语百科

Raman scattering 拉曼效应

(重定向自Raman Effect)
The different possibilities of light scattering: Rayleigh scattering (no exchange of energy: incident and scattered photons have the same energy), Stokes Raman scattering (atom or molecule absorbs energy: scattered photon has less energy than the incident photon) and anti-Stokes Raman scattering (atom or molecule loses energy: scattered photon has more energy than the incident photon)
El científico sir Chandrasekhara Venkata Raman, un importante químico que fue laureado con el Premio Nobel en 1930.
Emisión causada por la dispersión Stokes y anti-Stokes.

Raman scattering or the Raman effect /ˈrɑːmən/ is the inelastic scattering of a photon. It was discovered by C. V. Raman and K. S. Krishnan (who was one of C.V. Raman's students) in liquids, and independently by Grigory Landsberg and Leonid Mandelstam in crystals. The effect had been predicted theoretically by Adolf Smekal in 1923.

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更新时间:2025/6/17 2:06:39