Bibliographic Details
| Title: |
Radon Daughter Plate-out Measurements at SNOLAB for Polyethylene and Copper |
| Authors: |
Stein, Matthew, Bauer, Dan, Bunker, Ray, Calkins, Rob, Cooley, Jodi, Loer, Ben, Scorza, Silvia |
| Publication Year: |
2017 |
| Collection: |
Astrophysics |
| Subject Terms: |
Astrophysics - Instrumentation and Methods for Astrophysics |
| More Details: |
Polyethylene and copper samples were exposed to the underground air at SNOLAB for approximately three months while several environmental factors were monitored. Predictions of the radon-daughter plate-out rate are compared to the resulting surface activities, obtained from high-sensitivity measurements of alpha emissivity using the XIA UltraLo-1800 spectrometer at SMU. From these measurements, we determine an average $^{210}$Pb plate-out rate of 249 and 423 atoms/day/cm$^{2}$ for polyethylene and copper, respectively, when exposed to radon activity of 135 Bq/m$^{3}$ at SNOLAB. A time-dependent model of alpha activity is discussed for these materials placed in similar environmental conditions.
Comment: 7 pages, 7 figures |
| Document Type: |
Working Paper |
| DOI: |
10.1016/j.nima.2017.10.054 |
| Access URL: |
http://arxiv.org/abs/1708.09476 |
| Accession Number: |
edsarx.1708.09476 |
| Database: |
arXiv |
