[Triumf-seminars] TRIUMF ISAC Seminar today at 10:30

Wed, 20 Oct 2004 05:00:01 -0700

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Date/Time: Wed 2004-10-20 at 10:30

Location:  Auditorium          

Speaker:   Christof Vockenhuber (TRIUMF)

Title:     Accelerator Mass Spectrometry - 14C dating and beyond

Abstract: Accelerator Mass Spectrometry (AMS) started about 25 years ago at nuclear physics laboratories. Since then, it has evolved into the most versatile method to measure minute isotopic ratios, as low as 10^-16 in small samples. AMS has revolutionized the use of long-lived radionuclides by detecting the radioactive atoms directly rather than their infrequent decay. In this way, one gains many orders of magnitude in detection sensitivity. By far the most used radionuclide in AMS is 14C which allows precise dating of human activities from the past fifty thousand years. However, other radionuclides have become more and more important and applications now touch almost every field of the environment at large. Starting with 14C and the physical principles of this successful detection method of long-lived radionuclides, this talk will give an overview of AMS and discuss some applications beyond 14C dating. 

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