Video Experimental Relacionado
Updated: May 2, 2026
11:20
Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses
Published on: July 2, 2012
16.9K
Observaciones simultáneas desde tierra y el espacio de la pluma plasmasférica y la reconexión
B M Walsh1, J C Foster, P J Erickson
1NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA.
Science (New York, N.Y.)
|March 8, 2014
Resumen
Transferencia de energía del viento solar a la Tierra.
Área de la Ciencia:
- Física del espacio Física del espacio
- Física del plasma es la física del plasma.
- La geofísica es la geofísica.
Sus antecedentes:
- La reconexión magnética impulsa la transferencia de energía del viento solar a la magnetosfera de la Tierra.
- Las plumas plasmasféricas, frías y densas, influyen significativamente en la eficiencia de la reconexión diurna.
Objetivo del estudio:
- Investigar el papel de las plumas plasmasféricas en la reconexión magnética inestable.
- Correlaciona las observaciones ionosféricas y magnetosféricas del acoplamiento pluma-reconexión.
Principales métodos:
- Mapas de contenido total de electrones (TEC) basados en tierra utilizados.
- Se analizaron las mediciones in situ de la nave espacial THEMIS.
Principales resultados:
- Se observó el patrón de circulación completo de la pluma plasmasférica.
- Valida el vínculo entre la variabilidad del penacho y la reconexión de la magnetopausa.
Conclusiones:
- Las plumas plasmasféricas son parte integral de los inestables procesos de reconexión magnética.
- Las mediciones de TEC rastrean efectivamente las firmas de reconexión influenciadas por plumas.
Videos de Conceptos Relacionados
01:26Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation
1.1K
Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
1.1K
01:19Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle
2.4K
Inductively coupled plasma (ICP) is the most widely used plasma source in atomic emission spectroscopy (AES), also known as Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). The ICP source, or torch, consists of three concentric quartz tubes with argon gas flowing through them. A spark from a Tesla coil initiates the ionization of argon, generating a high-temperature plasma.
The ions and electrons produced interact with the fluctuating magnetic field created by a water-cooled...
The ions and electrons produced interact with the fluctuating magnetic field created by a water-cooled...
2.4K
01:19Inductively Coupled Plasma–Mass Spectrometry (ICP–MS): Overview
2.7K
In inductively coupled plasma–mass spectrometry (ICP–MS), an inductively coupled plasma (ICP) torch is used as an atomizer and ionizer. Solid samples are dissolved and volatilized before being introduced into the high-temperature argon plasma, while solution samples are nebulized and passed through the high-temperature argon plasma. Plasma dissociates the analytes and ionizes their component atoms to form a mixture of positive ions and molecular species. The positive ions are then...
2.7K
01:20Atomic Emission Spectroscopy: Overview
3.0K
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...
3.0K
01:29Atomic Emission Spectroscopy: Lab
873
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...
873
01:22Atomic Emission Spectroscopy: Instrumentation
1.5K
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.
1.5K