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関連する概念動画

Molecular Orbital Theory II03:51

Molecular Orbital Theory II

Molecular Orbital Energy Diagrams
Atomic Orbitals02:44

Atomic Orbitals

An atomic orbital represents the three-dimensional regions in an atom where an electron has the highest probability to reside. The radial distribution function indicates the total probability of finding an electron within the thin shell at a distance r from the nucleus. The atomic orbitals have distinct shapes which are determined by l, the angular momentum quantum number. The orbitals are often drawn with a boundary surface, enclosing densest regions of the cloud.
The Aufbau Principle and Hund's Rule03:02

The Aufbau Principle and Hund's Rule

To determine the electron configuration for any particular atom, we can build the structures in the order of atomic numbers. Beginning with hydrogen, and continuing across the periods of the periodic table, we add one proton at a time to the nucleus and one electron to the proper subshell until we have described the electron configurations of all the elements. This procedure is called the aufbau principle, from the German word aufbau (“to build up”). Each added electron occupies the subshell of...
Hybridization of Atomic Orbitals I03:24

Hybridization of Atomic Orbitals I

The mathematical expression known as the wave function, ψ, contains information about each orbital and the wavelike properties of electrons in an isolated atom. When atoms are bound together in a molecule, the wave functions combine to produce new mathematical descriptions that have different shapes. This process of combining the wave functions for atomic orbitals is called hybridization and is mathematically accomplished by the linear combination of atomic orbitals. The new orbitals that...
Valence Bond Theory and Hybridized Orbitals02:38

Valence Bond Theory and Hybridized Orbitals

According to valence bond theory, a covalent bond results when: (1) an orbital on one atom overlaps an orbital on a second atom, and (2) the single electrons in each orbital combine to form an electron pair. The strength of a covalent bond depends on the extent of overlap of the orbitals involved. Maximum overlap is possible when the orbitals overlap on a direct line between the two nuclei.
A σ bond (single bond in a Lewis structure) is a covalent bond in which the electron density is...
Hybridization of Atomic Orbitals II03:35

Hybridization of Atomic Orbitals II

sp3d and sp3d 2 Hybridization

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Updated: Jun 28, 2026

Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing
10:42

Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing

Published on: March 22, 2019

N2内の複数の軌道から高ハーモニックの生成

Brian K McFarland1, Joseph P Farrell, Philip H Bucksbaum

  • 1PULSE Institute, SLAC, Menlo Park, CA 94025, USA, and Departments of Physics and Applied Physics, Stanford University, Stanford, CA 94305, USA.

Science (New York, N.Y.)
|November 1, 2008
PubMed
まとめ
この要約は機械生成です。

研究者らは,N2分子の高調和生成 (HHG) に影響する下層の分子軌道を観察した. この発見は,レーザー刺激分子における超高速電子ダイナミクスの理解に極めて重要です.

さらに関連する動画

Line Shape Analysis of Dynamic NMR Spectra for Characterizing Coordination Sphere Rearrangements at a Chiral Rhenium Polyhydride Complex
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Line Shape Analysis of Dynamic NMR Spectra for Characterizing Coordination Sphere Rearrangements at a Chiral Rhenium Polyhydride Complex

Published on: July 27, 2022

Harmonic Nanoparticles for Regenerative Research
09:23

Harmonic Nanoparticles for Regenerative Research

Published on: May 1, 2014

関連する実験動画

Last Updated: Jun 28, 2026

Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing
10:42

Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing

Published on: March 22, 2019

Line Shape Analysis of Dynamic NMR Spectra for Characterizing Coordination Sphere Rearrangements at a Chiral Rhenium Polyhydride Complex
10:52

Line Shape Analysis of Dynamic NMR Spectra for Characterizing Coordination Sphere Rearrangements at a Chiral Rhenium Polyhydride Complex

Published on: July 27, 2022

Harmonic Nanoparticles for Regenerative Research
09:23

Harmonic Nanoparticles for Regenerative Research

Published on: May 1, 2014

科学分野:

  • 量子化学とは,量子化学である.
  • 分子スペクトロスコーピーは分子スペクトロスコーピーを用います.
  • アットセカンドサイエンス

背景:

  • ハイハーモニック生成 (HHG) は,超短光のパルスを生成するための重要なプロセスです.
  • 理論的なモデルは,最も高い占有分子軌道 (HOMO) 以下の分子軌道がHHGに影響するべきであると予測しています.
  • これらの低い軌道が寄与する実験的証拠は不足しています.

研究 の 目的:

  • HOMOより下の分子電子状態がレーザー駆動のHHGに及ぼす影響を実験的に調査する.
  • N2分子のHHGプロセスにおけるHOMO-1軌道の役割を調査する.
  • 分子の超高速電子ダイナミクスに関する理解を深める.

主な方法:

  • 高調和生成 (HHG) スペクトロスコピーはN2分子で実施されました.
  • 分子配列は制御され,N2分子はレーザー極化に垂直に方向づけられました.
  • その結果得られたHHGスペクトルは,特徴的な特徴を分析した.

主要な成果:

  • HHGスペクトルでは,回転半復活時に明確な最大値が観察されました.
  • このスペクトルの特徴は,HOMO-1軌道が寄与した証拠を提供する.
  • 結果は,HOMOの下の電子状態がHHGに及ぼす影響を示しています.

結論:

  • この研究は,HHGに影響を与える下層の分子軌道の最初の実験的観測を提供します.
  • この発見は,サブフェムト秒とサブアングストロムスケールの電子運動の包括的な理解に不可欠です.
  • この研究は,分子電子ダイナミクスを制御し,探査するための新しい道を開きます.