Related Experiment Video
Updated: Apr 14, 2026

Contrast-Matching Detergent in Small-Angle Neutron Scattering Experiments for Membrane Protein Structural Analysis and Ab Initio Modeling
Published on: October 21, 2018
Proposed parameter-free model for interpreting the measured positron annihilation spectra of materials using a
Bernardo Barbiellini1, Jan Kuriplach2
1Department of Physics, Northeastern University, Boston, Massachusetts 02115, USA.
Abstract:
Positron annihilation spectroscopy is often used to analyze the local electronic structure of materials of technological interest. Reliable theoretical tools are crucial to interpret the measured spectra. Here, we propose a parameter-free gradient correction scheme for a local-density approximation obtained from high-quality quantum Monte Carlo data. The results of our calculations compare favorably with positron affinity and lifetime measurements, opening new avenues for highly precise and advanced positron characterization of materials.
Related Concept Videos
Atomic Emission Spectroscopy: Overview
Atomic Emission Spectroscopy: Lab
Mass Spectrum: Interpretation
Atomic Spectroscopy: Absorption, Emission, and Fluorescence
Mass Spectrometry: Complex Analysis
GC–MS is a powerful hyphenated method commonly used in forensics and environmental...
Mass Spectrometry: Overview

