Quantcast Decay Series - hdbk1113cn10119

 

Click here to make tpub.com your Home Page

Page Title: Decay Series
Back | Up | Next

Click here for thousands of PDF manuals

Google


Web
www.tpub.com

Home

   
Information Categories
.... Administration
Advancement
Aerographer
Automotive
Aviation
Construction
Diving
Draftsman
Engineering
Electronics
Food and Cooking
Logistics
Math
Medical
Music
Nuclear Fundamentals
Photography
Religion
   
   

 

Share on Google+Share on FacebookShare on LinkedInShare on TwitterShare on DiggShare on Stumble Upon
Back
Table - hdbk1113cn10118
Up
Radiological Safety Training for Uranium Facilities - index
Next
Fire - hdbk1113cn10120


DOE-HDBK-1113-98
Radiological Safety Training for Uranium Facilities
Module 101 - Properties of Uranium
Both alpha and beta particles are emitted as part of decay series. For example, 238U decays by alpha
emission to  234Th; 234Th decays by beta emission to  234mPa; and so on, until stable  206Pb is finally
reached.
1. Decay Series
Uranium has two naturally occurring decay series: the "actinium" series, which has 235U as its
parent; and the "uranium" series, which has 238U as its parent. Many of our everyday encounters
with rad ioacti vity come fr om these d ecay seri es; examp les are r adon gas a nd radiu m.
U and 233U. The decay products from these
232
There a re also ma n-made iso topes of uranium -
radionuclides must be considered in the implementation of a radiological control program at a
facility where these uranium nuclides are present.
2. Criticality
Uranium is a fissionable material, which means it can undergo nuclear fission. Nuclear fission is
a process in which a very heavy, unstable atom splits in two, or "fissions". When an atom
fissions, one large atom primarily becomes two smaller atoms, between one and seven neutrons
are given off (which may cause fission in nearby atoms), and a great deal of energy is given off
as radiation and in other forms, such as kinetic energy of the fission fragments. The radiation
created could result in the creation of radiological areas, such as High or Very High Radiation
Areas. Nuclear criticality associated with uranium will be discussed in greater detail later in the
lesson.
D. Chemical Properties
Uranium is chemically reactive. It burns in air like magnesium; it is toxic like lead; and it forms a
large variety of chemical compoun ds. All the iso topes of uran ium have the same che mical reacti vity,
and all can be made into the many different physical and chemical forms discussed in this section.
5


Privacy Statement - Press Release - Copyright Information. - Contact Us

Integrated Publishing, Inc.