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関連する概念動画

X-ray Imaging01:24

X-ray Imaging

German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with X-rays, and by 1900, X-ray was widely...
IR Frequency Region: X–H Stretching01:24

IR Frequency Region: X–H Stretching

In IR spectroscopy, signals produced by the X−H bonds (such as C−H, O−H, or N−H) can be observed in the frequency range of  2700–4000 cm–1. The C−H stretching vibration forms sharp bands in the region 2850–3000 cm–1. The presence of the O−H stretching vibration leads to the forming of an absorption band in the frequency range 3650–3200 cm−1. At the same time, N−H stretching can be confirmed by absorption bands in the 3500–3100 cm−1 range. Even though both O−H and N−H bonds vibrate at a similar...
Atomic Emission Spectroscopy: Instrumentation01:22

Atomic Emission Spectroscopy: Instrumentation

The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers.  Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.
Atomic Absorption Spectroscopy: Radiation and Light Sources01:13

Atomic Absorption Spectroscopy: Radiation and Light Sources

Atomic absorption spectroscopy (AAS) relies on the Beer-Lambert law, which requires that the radiation source emits a narrow range of wavelengths to match the absorption characteristics of the analyte atom. The primary criteria for choosing an appropriate radiation source in AAS is to provide a precise and intense emission at specific wavelengths that will allow accurate detection of the analyte.
Two common narrow-range 'line' sources used in AAS are hollow-cathode lamps (HCLs) and...
Generating Electromagnetic Radiations01:10

Generating Electromagnetic Radiations

The German physicist Heinrich Hertz (1857–1894) was the first to generate and detect certain types of electromagnetic waves in the laboratory. Starting in 1887, he performed a series of experiments that confirmed the existence of electromagnetic waves and verified that they travel at the speed of light. Hertz used an alternating-current RLC (resistor-inductor-capacitor) circuit that resonated at a known frequency and connected it to a loop of wire. High voltages induced across the gap in the...
Atomic Emission Spectroscopy: Overview01:20

Atomic Emission Spectroscopy: Overview

Atomic emission spectroscopy (AES) is an analytical technique used to determine the elemental composition of a sample by analyzing the light emitted from excited atoms. In AES, atoms in a sample are excited to higher energy levels by thermal energy from high-temperature sources, such as plasma, arcs, or sparks. When these excited atoms return to lower energy states, they emit light at specific wavelengths characteristic of each element. The resulting atomic emission spectrum, which consists of...

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関連する実験動画

Updated: Jul 12, 2026

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
10:39

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating

Published on: October 11, 2016

調整可能なコヒーレントX線

D Attwood, K Halbach, K J Kim

    Science (New York, N.Y.)
    |June 14, 1985
    PubMed
    まとめ

    新しいシンクロトロン放射線施設は,高度な研究のために,レーザーのような柔らかいX線を生成します. この技術は,生物学的および材料のサンプルを詳細に微小探査することを可能にし,現在の実験室レーザー能力を上回ります.

    科学分野:

    • 物理 物理学 物理学とは
    • マテリアルサイエンス 材料科学
    • バイオフィジックス 生物物理学

    背景:

    • 現在のXUVレーザーは,高度なマイクロソービングの能力を欠いている.
    • 既存のシンクロトロン装置は,特定の研究アプリケーションに必要な一貫性と調整性を提供しない可能性があります.

    研究 の 目的:

    • 提案されている10億〜20億電子ボルトのシンクロトロン放射施設の能力を概説する.
    • この施設によって生成される一貫した柔らかいX線の潜在的応用を強調する.

    主な方法:

    • シンクロトロンで高輝度電子束と磁気波動器を使用する.
    • 波長が10アングストロム以下で,幅広く調整可能な柔らかいX線を生成します.
    • 生成される放射線の完全な極化制御を達成する.

    主要な成果:

    • 一貫性のある,レーザーのような柔らかいX線の生成.
    • 波長の調律性は10アンストームまで低下する.
    • 段階および要素に敏感なマイクロソービングおよびマイクロファブリケーションの可能性.

    結論:

    さらに関連する動画

    Generation and Coherent Control of Pulsed Quantum Frequency Combs
    06:42

    Generation and Coherent Control of Pulsed Quantum Frequency Combs

    Published on: June 8, 2018

    Differential Imaging of Biological Structures with Doubly-resonant Coherent Anti-stokes Raman Scattering (CARS)
    12:56

    Differential Imaging of Biological Structures with Doubly-resonant Coherent Anti-stokes Raman Scattering (CARS)

    Published on: October 17, 2010

    関連する実験動画

    Last Updated: Jul 12, 2026

    Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
    10:39

    Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating

    Published on: October 11, 2016

    Generation and Coherent Control of Pulsed Quantum Frequency Combs
    06:42

    Generation and Coherent Control of Pulsed Quantum Frequency Combs

    Published on: June 8, 2018

    Differential Imaging of Biological Structures with Doubly-resonant Coherent Anti-stokes Raman Scattering (CARS)
    12:56

    Differential Imaging of Biological Structures with Doubly-resonant Coherent Anti-stokes Raman Scattering (CARS)

    Published on: October 17, 2010

    • 提案されているシンクロトロン施設は,生物学的および材料研究にとって極めて重要なユニークな短波長能力を提供しています.
    • C,N,OのK吸収エッジアクセスを含むこれらの機能は,現在のXUVレーザーでは利用できません.
    • より高いエネルギー貯蔵リング (5-6 GeV) は,コヒーレンスが低下し,光学コンポーネントの熱負荷が増加したため,あまり適していません.