Related Experiment Video
Updated: May 31, 2026
09:40
Measurement and Analysis of Atomic Hydrogen and Diatomic Molecular AlO, C2, CN, and TiO Spectra Following Laser-induced Optical Breakdown
Published on: February 14, 2014
Microwave initiated atomic spectra from select atomic species
Amand Anand1, James Roberts, Richard Croley
1Department of Physics, University of North Texas, Denton, TX 76203, USA.
Summary
This study compares microwave-stimulated atomic emissions of helium isotopes (3He and 4He) with traditional arc discharge data. Analysis of spectral emission lines aids in understanding atomic quantum levels.
Area of Science:
- Atomic Physics
- Quantum Mechanics
- Spectroscopy
Background:
- Understanding atomic energy levels is crucial in physics.
- Helium isotopes (3He and 4He) offer unique systems for study.
- Spectroscopic analysis provides insights into quantum states.
Purpose of the Study:
- To analyze and compare atomic emission spectra of helium isotopes.
- To investigate microwave-stimulated emissions versus traditional arc discharge.
- To characterize spectral emission lines and understand quantum level transitions.
Main Methods:
- Admission of helium isotopes (3He, 4He) into a vacuum system.
- Energization of quantum states using a 2.45 GHz magnetron.
- Spectroscopic analysis using an optical spectrometer and mass determination via residual gas analyzer.
Main Results:
- Characteristic spectral emission lines were obtained for helium isotopes.
- Data represent transitions among discrete quantum energy levels.
- Comparison between microwave-stimulated and arc discharge emissions was performed.
Conclusions:
- Atomic spectroscopy is vital for understanding quantum levels.
- The study provides data on helium isotope spectral emissions.
- Computational and theoretical techniques were employed alongside experimental data.
Related Concept Videos
01:23Atomic Spectroscopy: Absorption, Emission, and Fluorescence
Atomic spectroscopy is a vital tool in elemental analysis, both qualitatively and quantitatively. It can be broadly divided into optical spectroscopy, mass spectroscopy, and X-ray spectroscopy methods. The optical spectroscopic methods are atomic absorption spectroscopy (AAS), atomic emission spectroscopy (AES), and atomic fluorescence spectroscopy (AFS). The first step in all three methods is atomization, where the solid, liquid, or solution-phase samples are converted into gas-phase atoms and...
01:20Atomic 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...
01:22Atomic 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.
01:29Atomic 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...
01:30Atomic 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,...
01:27Atomic Spectroscopy: Effects of Temperature
Atomization, converting samples into gas-phase atoms and ions, is essential for atomic spectroscopy. The flame temperature required for atomization affects the efficiency of the atomic spectroscopic methods by increasing the atomization efficiency and the relative population of the excited and ground states.
At thermal equilibrium, the relative populations of excited and ground state atoms can be estimated using the Maxwell–Boltzmann distribution. For example, an increase in temperature from...
At thermal equilibrium, the relative populations of excited and ground state atoms can be estimated using the Maxwell–Boltzmann distribution. For example, an increase in temperature from...