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関連する概念動画

Emission Spectra02:39

Emission Spectra

When solids, liquids, or condensed gases are heated sufficiently, they radiate some of the excess energy as light. Photons produced in this manner have a range of energies, and thereby produce a continuous spectrum in which an unbroken series of wavelengths is present.
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...
Atomic Emission Spectroscopy: Lab01:29

Atomic Emission Spectroscopy: Lab

AES is a powerful analytical technique, especially effective when used with plasma sources, producing abundant spectra in characteristic emission lines. The Inductively Coupled Plasma (ICP), in particular, yields superior quantitative analytical data due to its high stability, low noise, low background, and minimal interferences under optimal experimental conditions. However, newer air-operated microwave sources are emerging as promising alternatives that could be more cost-effective than...
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 Emission Spectroscopy: Interference01:30

Atomic Emission Spectroscopy: Interference

In atomic emission spectroscopy (AES), high-temperature atomizers excite a broad range of elements and molecules that generate complex emissions from sources such as oxides, hydroxides, and flame combustion products in the flame or plasma. Several strategies can be employed to minimize spectral interferences caused by overlapping emission lines or bands. These include increasing instrument resolution, choosing alternative emission lines, optimally placing the detector in low-background regions,...
Flame Photometry: Overview01:02

Flame Photometry: Overview

Flame photometry, also known as flame emission spectrometry, is a technique used for the qualitative and quantitative analysis of elements present in a sample using a flame as the source of excitation energy. The concept of flame photometry was realized in the early 1860s by Kirchhoff and Bunsen, who discovered that specific elements emit characteristic radiation when excited in flames. The first instrument developed for this purpose was used to measure sodium (Na) in plant ash using a Bunsen...

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関連する実験動画

Updated: May 25, 2026

Visualization of Low-Level Gamma Radiation Sources Using a Low-Cost, High-Sensitivity, Omnidirectional Compton Camera
06:28

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Published on: January 30, 2020

ガンマ線バイナリ1FGL J1018.6-5856からの周期的な放射

Fermi LAT Collaboration1, M Ackermann, M Ajello

  • 1W. W. Hansen Experimental Physics Laboratory, Kavli Institute for Particle Astrophysics and Cosmology, Department of Physics and SLAC National Accelerator Laboratory, Stanford University, Stanford, CA 94305, USA.

Science (New York, N.Y.)
|January 17, 2012
PubMed
まとめ

天文学者はフェルミ大型望遠鏡 (LAT) を使って,珍しいガンマ線バイナリ"1FGL J1018.6-5856"を発見した. このシステム このシステム このシステム

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20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

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関連する実験動画

Last Updated: May 25, 2026

Visualization of Low-Level Gamma Radiation Sources Using a Low-Cost, High-Sensitivity, Omnidirectional Compton Camera
06:28

Visualization of Low-Level Gamma Radiation Sources Using a Low-Cost, High-Sensitivity, Omnidirectional Compton Camera

Published on: January 30, 2020

Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies
09:38

Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies

Published on: December 18, 2015

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
10:17

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科学分野:

  • 天体物理学 天体物理学
  • 高エネルギー天体物理学
  • バイナリー・スター・システム バイナリー・スター・システム

背景:

  • ガンマ線バイナリ星は,我々の銀河系で数十の予測にもかかわらず,希少です.
  • その放射は,コンパクトな天体 (中性子星やブラックホール) とその同伴星との相互作用から発生する.

研究 の 目的:

  • 新しいガンマ線バイナリを特定し,特徴づけること.
  • 天体1FGL J1018.6-5856.の性質を調査するために

主な方法:

  • フェルミ大型望遠鏡 (LAT) のデータをガンマ線観測に使用した.
  • 変数X線,光線,無線の同位体を特定,分析した.

主要な成果:

  • 1FGL J1018.6-5856は,16.6日周期で,ガンマ線の強度とスペクトルの周期的な変調を示しています.
  • 変数X線対照は,ガンマ線放射と同時にピークに達した.
  • O6V ((((f)) の星と,調節された無線の対称星が特定されました.

結論:

  • 1FGL J1018.6-5856がガンマ線バイナリーであることが確認されました.
  • このシステムの検出は,銀河系の中に,他の,より弱いガンマ線バイナリの存在を暗示しています.