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Related Concept Videos

Inductively Coupled Plasma–Mass Spectrometry (ICP–MS): Overview01:19

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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...
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Inductively coupled plasma–mass spectrometry (ICP–MS) is a highly selective and sensitive technique for accurate elemental analysis. Though the analysis of ICP–MS mass spectra is comparatively straightforward, it is affected by spectroscopic and non-spectroscopic interferences. Spectroscopic interferences arise when the plasma contains ionic species with an m/z value the same as the analyte ion. Spectroscopic interference can be categorized as isobaric, polyatomic ions, and...
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To be visualized by an electron microscope, either transmission or scanning, biological samples need to be fixed (stabilized) so the electron beam does not destroy them and dried thoroughly (desiccated/dehydrated) so the vacuum does not affect them. Fixation needs to be done as quickly as possible because the sample properties will start changing as soon as it is removed from its natural environment. For example, in a tissue sample, the oxygen levels begin decreasing, causing an altered...
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Scattering And Absorption of Light in Planetary Regoliths
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Direct Samples of Interstellar and Interplanetary Material with IMAP.

J R Szalay1, E Provornikova2, E Ayari3

  • 1Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08540 USA.

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|April 6, 2026
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Summary
This summary is machine-generated.

The Interstellar Mapping and Acceleration (IMAP) mission will sample interstellar and interplanetary material. This research will reveal the local interstellar medium

Keywords:
IMAPInterstellar dustInterstellar mediumInterstellar neutral atoms

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Area of Science:

  • * Heliophysics
  • * Space Physics
  • * Astrochemistry

Background:

  • * The heliosphere shields Earth from the interstellar medium (ISM).
  • * Understanding ISM-heliosphere interaction is crucial for space weather.
  • * Previous missions have provided limited direct sampling of the ISM.

Purpose of the Study:

  • * To detail the scientific goals for the IMAP mission's theme on sampling interstellar and interplanetary material.
  • * To identify key scientific opportunities for IMAP at 1 astronomical unit (au).
  • * To address critical questions about the local interstellar medium (LISM) and its interaction with the heliosphere.

Main Methods:

  • * Direct sampling of interstellar and interplanetary material by the IMAP spacecraft.
  • * In-situ measurements of dust and gas composition.
  • * Analysis of energetic neutral atoms to probe the outer heliosphere.

Main Results:

  • * IMAP's unique position at 1 au enables unprecedented direct sampling.
  • * The mission will address the state and evolution of the upstream LISM.
  • * It will investigate the interaction between the very local interstellar medium (VLISM) and the heliosphere.
  • * The impact of interstellar material and dust on the near-Sun environment will be assessed.

Conclusions:

  • * IMAP will provide crucial data on the composition and properties of the ISM.
  • * The mission will enhance our understanding of heliospheric processes and space weather.
  • * Findings will illuminate the origins and evolution of interstellar material.