Absorbed Dose in Water: Comparison of Several Methods Using a Liquid Ionization Chamber

O. Mattsson DEPARTMENT OF RADIATION PHYSICS, SAHLGRENSKA SJUKHUSET, GöTEBORG; THE RADIATION PHYSICS DEPARTMENT, UNIVERSITY OF UMEÅ, UMEÅ, SWEDEN; THE CENTER FOR RADIATION RESEARCH, NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY, GAITHERSBURG, MD, USA

H. Svensson DEPARTMENT OF RADIATION PHYSICS, SAHLGRENSKA SJUKHUSET, GöTEBORG; THE RADIATION PHYSICS DEPARTMENT, UNIVERSITY OF UMEÅ, UMEÅ, SWEDEN; THE CENTER FOR RADIATION RESEARCH, NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY, GAITHERSBURG, MD, USA

G. Wickman DEPARTMENT OF RADIATION PHYSICS, SAHLGRENSKA SJUKHUSET, GöTEBORG; THE RADIATION PHYSICS DEPARTMENT, UNIVERSITY OF UMEÅ, UMEÅ, SWEDEN; THE CENTER FOR RADIATION RESEARCH, NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY, GAITHERSBURG, MD, USA

S. R. Domen DEPARTMENT OF RADIATION PHYSICS, SAHLGRENSKA SJUKHUSET, GöTEBORG; THE RADIATION PHYSICS DEPARTMENT, UNIVERSITY OF UMEÅ, UMEÅ, SWEDEN; THE CENTER FOR RADIATION RESEARCH, NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY, GAITHERSBURG, MD, USA

J. S. Pruitt DEPARTMENT OF RADIATION PHYSICS, SAHLGRENSKA SJUKHUSET, GöTEBORG; THE RADIATION PHYSICS DEPARTMENT, UNIVERSITY OF UMEÅ, UMEÅ, SWEDEN; THE CENTER FOR RADIATION RESEARCH, NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY, GAITHERSBURG, MD, USA

R. Loevinger DEPARTMENT OF RADIATION PHYSICS, SAHLGRENSKA SJUKHUSET, GöTEBORG; THE RADIATION PHYSICS DEPARTMENT, UNIVERSITY OF UMEÅ, UMEÅ, SWEDEN; THE CENTER FOR RADIATION RESEARCH, NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY, GAITHERSBURG, MD, USA

Abstract

In the present investigation a liquid ionization chamber has been used as a transfer instrument for the quantity absorbed dose in water in a cobalt-60 gamma-ray beam. The characteristics of the liquid ionization chamber are described. The transferred dosi-metric information has been compared with absorbed-dose determination using air-ionization-chamber dosimetry, water calori-metry and ferrous-sulphate dosimetry. The agreement between the different measured absorbed-dose values is very good, i.e. within 0.2%. This is an indication that the consistency in the methods used to determine absorbed dose in water is good. The impact of the new standard for air kerma in air, introduced in 1986 by the BIPM, on the air-ionization-chamber dosimetry is investigated. It is shown that any differences in the dosimetry when using the old or the new set of data cancel out for the cobalt-60 beam. The investigation also shows that the value of E, C for the ferrous-sulphate dosimeter recommended in ICRU 35 for electrons can be used also in cobalt-60 beams.

Key Words:

Reprints and Corporate Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

To request a reprint or corporate permissions for this article, please click on the relevant link below:

Order Reprints Request Corporate Permissions

Academic Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

Obtain permissions instantly via Rightslink by clicking on the button below:

Request Academic Permissions

If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.

Absorbed Dose in Water: Comparison of Several Methods Using a Liquid Ionization Chamber

Information for

Open access

Opportunities

Help and information

Absorbed Dose in Water: Comparison of Several Methods Using a Liquid Ionization Chamber

Abstract

Reprints and Corporate Permissions

Academic Permissions

Related research

To cite this article:

Download citation

Information for

Open access

Opportunities

Help and information

Keep up to date

Your download is now in progress and you may close this window

Login or register to access this feature