About Us
The Health Physics Society (HPS), formed in 1956, is a scientific organization of professionals who specialize in radiation safety. Its mission is to support its members in the practice of their profession and to promote excellence in the science and practice of radiation safety.
Health Physics News
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9 August 2026The Health Physics journal editorial staff underwent a major transition at the 2026 Health Physics Society (HPS) Annual Meeting in […]
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7 August 2026
In Memoriam: Joel E. Gray
We are saddened to report that Health Physics Society (HPS) member Joel E. Gray died 23 April 2026. An In […] -
7 August 2026
Proposed Office of Management and Budget Revisions to Current Guidance for Federal Financial Assistance
On 29 May 2026, the Office of Management and Budget (OMB) issued a proposed rule (2 CFR 200) to revise […] -
5 August 2026
71st HPS Annual Meeting in Review: 2026 Health Physics Society Awards
The following awards were presented at the 71st Health Physics Society (HPS) Annual Meeting in July 2026 in National Harbor, […] -
5 August 2026
71st HPS Annual Meeting in Review: 2026 HPS Raffle Winners
Congratulations to Bill Beal, the winner of the 2026 HPS Raffle. As the Grand Prize winner, Bill received $6,340. The […] -
5 August 2026
71st HPS Annual Meeting in Review: American Academy of Health Physics 2026 Awards
ABHP William A. McAdams Outstanding Service Award Allen M. Mabry, CHP Allen Mabry, right, receives the ABHP William A. McAdams […]
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Decay Calculator
This Web application will allow you to calculate the activity of a radionuclide after a specified interval of time. The list of radionuclides excludes those with half lives measured in seconds.









