Comment on Measurement of the Z sub 1 sup 3 contribution to the stopping power using MeV protons and antiprotons, the Barkas effect''

PDF Version Also Available for Download.

Description

In a recent Letter, Andersen et al. reported measured energy losses of 0.5--3.0 MeV protons and antiprotons in silicon and extracted the Z{sub 1}{sup 3} (or Barkas) correction to the stopping power. They compared their results to calculations that are valid for distant collisions and are based on a perturbation expansion for the excitation of a classical harmonic oscillator. The authors mentioned that there has been a long-standing discussion about the contribution from close collisions to the Z{sub 1}{sup 3} correction, but that no agreement had been reached in view of lacking quantitative calculations. In this Comment we report on ... continued below

Physical Description

Pages: (4 p)

Creation Information

Mikkelsen, H.H. (Odense Univ. (Denmark)); Esbensen, H. (Argonne National Lab., IL (USA)) & Sigmund, P. (Argonne National Lab., IL (USA) Odense Univ. (Denmark)) January 1, 1991.

Context

This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this report can be viewed below.

Who

People and organizations associated with either the creation of this report or its content.

Provided By

UNT Libraries Government Documents Department

Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.

Contact Us

What

Descriptive information to help identify this report. Follow the links below to find similar items on the Digital Library.

Description

In a recent Letter, Andersen et al. reported measured energy losses of 0.5--3.0 MeV protons and antiprotons in silicon and extracted the Z{sub 1}{sup 3} (or Barkas) correction to the stopping power. They compared their results to calculations that are valid for distant collisions and are based on a perturbation expansion for the excitation of a classical harmonic oscillator. The authors mentioned that there has been a long-standing discussion about the contribution from close collisions to the Z{sub 1}{sup 3} correction, but that no agreement had been reached in view of lacking quantitative calculations. In this Comment we report on the results of recent theoretical evaluations of the Z{sub 1}{sup 3} correction in two different models, a spherical harmonic oscillator and a static electron gas. The calculations are quantal and include the effect of both close and distant collisions.

Physical Description

Pages: (4 p)

Notes

OSTI; NTIS; INIS; GPO Dep.

Language

Item Type

Identifier

Unique identifying numbers for this report in the Digital Library or other systems.

  • Other: DE91011128
  • Report No.: ANL/PP-67611
  • Grant Number: W-31109-ENG-38
  • DOI: 10.2172/5909139 | External Link
  • Office of Scientific & Technical Information Report Number: 5909139
  • Archival Resource Key: ark:/67531/metadc1098709

Collections

This report is part of the following collection of related materials.

Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

What responsibilities do I have when using this report?

When

Dates and time periods associated with this report.

Creation Date

  • January 1, 1991

Added to The UNT Digital Library

  • Feb. 18, 2018, 3:59 p.m.

Description Last Updated

  • April 18, 2018, 6:29 p.m.

Usage Statistics

When was this report last used?

Yesterday: 0
Past 30 days: 0
Total Uses: 3

Interact With This Report

Here are some suggestions for what to do next.

Start Reading

PDF Version Also Available for Download.

International Image Interoperability Framework

IIF Logo

We support the IIIF Presentation API

Mikkelsen, H.H. (Odense Univ. (Denmark)); Esbensen, H. (Argonne National Lab., IL (USA)) & Sigmund, P. (Argonne National Lab., IL (USA) Odense Univ. (Denmark)). Comment on Measurement of the Z sub 1 sup 3 contribution to the stopping power using MeV protons and antiprotons, the Barkas effect'', report, January 1, 1991; Illinois. (digital.library.unt.edu/ark:/67531/metadc1098709/: accessed September 24, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.