SPALLATION-FISSION COMPETITION IN ASTATINE COMPOUND NUCLEI FORMEDBY HEAVY-ION BOMBARDMENT

Thumbnail image of item number 1 in: 'SPALLATION-FISSION COMPETITION IN ASTATINE COMPOUND NUCLEI FORMEDBY HEAVY-ION BOMBARDMENT'.
Thumbnail image of item number 2 in: 'SPALLATION-FISSION COMPETITION IN ASTATINE COMPOUND NUCLEI FORMEDBY HEAVY-ION BOMBARDMENT'.
Thumbnail image of item number 3 in: 'SPALLATION-FISSION COMPETITION IN ASTATINE COMPOUND NUCLEI FORMEDBY HEAVY-ION BOMBARDMENT'.
Thumbnail image of item number 4 in: 'SPALLATION-FISSION COMPETITION IN ASTATINE COMPOUND NUCLEI FORMEDBY HEAVY-ION BOMBARDMENT'.
Showing 1-4 of 25 pages in this report.

PDF Version Also Available for Download.

Description

Cross sections for neutron-evaporation reactions from compound nuclei produced by bombardment of gold with carbon ions and of platinum with nitrogen ions have been determined. The magnitudes of the cross sections are considerably lower than would be predicted on the assumption that neutron emission is the only important mode of decay of the intermediate nuclei. This observation is explained on the basis of fission competition with neutron emission. To a much lesser extent, charged-particle evaporation is also a competing mode of decay. The arguments presented indicate that fission occurs either with comparable magnitudes in several nuclei in the neutron-evaporation chain, … continued below

Physical Description

24 p.

Creation Information

Thomas, T. Darrah; Gordon, Glen E.; Latimer, Robert M. & Seaborg, Glenn T. November 1, 1961.

Context

This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by the UNT Libraries Government Documents Department to the UNT Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 27 times. More information about this report can be viewed below.

Who

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

Authors

Sponsor

Publisher

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.

About | Browse this Partner

Contact Us

Corrections Questions

What

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

Description

Cross sections for neutron-evaporation reactions from compound nuclei produced by bombardment of gold with carbon ions and of platinum with nitrogen ions have been determined. The magnitudes of the cross sections are considerably lower than would be predicted on the assumption that neutron emission is the only important mode of decay of the intermediate nuclei. This observation is explained on the basis of fission competition with neutron emission. To a much lesser extent, charged-particle evaporation is also a competing mode of decay. The arguments presented indicate that fission occurs either with comparable magnitudes in several nuclei in the neutron-evaporation chain, or preferentially in one or two nuclei near the end of the chain, rather than predominantly in the initial compound nucleus. Problems arising from the possible existence of isomers in the odd-odd astatine nuclides are discussed.

Physical Description

24 p.

Language

Item Type

Identifier

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

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.

About | Browse this Collection

What responsibilities do I have when using this report?

Digital Files

When

Dates and time periods associated with this report.

Creation Date

  • November 1, 1961

Added to The UNT Digital Library

  • Sept. 27, 2016, 1:39 a.m.

Description Last Updated

  • Nov. 3, 2016, 8:01 p.m.

Usage Statistics

When was this report last used?

Yesterday: 0
Past 30 days: 0
Total Uses: 27
More Statistics

Interact With This Report

Here are some suggestions for what to do next.

Start Reading

Thumbnail image of item number 1 in: 'SPALLATION-FISSION COMPETITION IN ASTATINE COMPOUND NUCLEI FORMEDBY HEAVY-ION BOMBARDMENT'.
Thumbnail image of item number 2 in: 'SPALLATION-FISSION COMPETITION IN ASTATINE COMPOUND NUCLEI FORMEDBY HEAVY-ION BOMBARDMENT'.
Thumbnail image of item number 3 in: 'SPALLATION-FISSION COMPETITION IN ASTATINE COMPOUND NUCLEI FORMEDBY HEAVY-ION BOMBARDMENT'.
Thumbnail image of item number 4 in: 'SPALLATION-FISSION COMPETITION IN ASTATINE COMPOUND NUCLEI FORMEDBY HEAVY-ION BOMBARDMENT'.

PDF Version Also Available for Download.

Citations, Rights, Re-Use

International Image Interoperability Framework

IIF Logo

We support the IIIF Presentation API

Links for Robots

Helpful links in machine-readable formats.

Archival Resource Key (ARK)

International Image Interoperability Framework (IIIF)

Metadata Formats

Images

URLs

Stats

Thomas, T. Darrah; Gordon, Glen E.; Latimer, Robert M. & Seaborg, Glenn T. SPALLATION-FISSION COMPETITION IN ASTATINE COMPOUND NUCLEI FORMEDBY HEAVY-ION BOMBARDMENT, report, November 1, 1961; Berkeley, California. (https://digital.library.unt.edu/ark:/67531/metadc902261/: accessed May 22, 2025), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

Back to Top of Screen