PowerPoint-Präsentation - NATS Inc.

PowerPoint-Präsentation - NATS Inc.

Alpha spectrometry 2015 A Paradigm Shift in nuclear spectrum analysis Paper By Dr. W. Westmeier, K. Siemon, IEEE Transactions on Nuclear Science, Vol. 59/4 (2012) 1296 New programming strategies : Physics, no Numerology for: - peakshapes - shape of baseline - shape of background

- resolution function (no SQRT) - true coincidence losses - ..other Fuzzy logic for: - regioning - height of BGND before and after region - peaksearch - peakfit - repeated fit - various methods (Gauss, AWMI, Sieder, ..)

- nuclide assignment - ..other Alpha spectrometry 2015 -particle spectrometryparticle spectrometry

ALPS software can quantify even very complex and overlapping peaks yields quantitative isotope activities tracer analysis is integrated in the software a very complete library (390 nuclides with 1270 lines) is available Alpha spectrometry 2015 After our Paradigm Shift extreme analyses became possible

Quantitative separation of peaks from 239Pu and 240Pu Alpha spectrometry 2015 Quantitative separation of peaks from 239Pu and 240Pu Alpha spectrometry 2015 Fit of very complex and overlapping peak multiplett Example: old 231Pa source with all its progeny

Alpha spectrometry 2015 Fit of dried drop sample from river water Example: 1l river water preconcentrated to 1 ml, 200 l drops dried on sample plate. 238 U and (234U+230Th+226Ra) are found. 238U contents in river is 0.8 Bq/l Alpha spectrometry 2015

Fit of powdered granite sample, grain size 80 m Example: approx. 1 gram of granite powder was measured in a gridded ionisation chamber for over five days. 238U and 232Th progeny is completely quantified Alpha spectrometry 2015 Fit of filter paper sample from city air at main road Example: 1 dia. filter paper was loaded for 1 day and measured directly after 42h waiting time. 212Bi and 212Po are quantified yielding the 220Rn (thoron) concentration in the air. Note - coincidences above channel 450coincidences coincidences above channel 450above coincidences above channel 450channel coincidences above channel 450450

Alpha spectrometry 2015 Fit of ALGADE air sampler filter paper (1 month sampling) Example: filter paper was loaded for 1 month and measured directly with PIPS. 238 U and all progeny are quantified - no chemistry, no sample preparation Alpha spectrometry 2015

Modern -particle spectrometryspectrometry can do it all with ALPS High-precision analysis of spectra from thin samples Quantitative data through use of tracer nuclides Separation of peaks that were impossible before Analysis of spectra from thick samples Quantification through calculated efficiency Very simple sample preparation - drying of drop samples - ashing of organic material

- grinding of solids

Recently Viewed Presentations

  • Case Study 27 - University of Pittsburgh

    Case Study 27 - University of Pittsburgh

    Neuropathology Case Study J. Seth McAfee, M.D. Patient is a 34 y/o male presenting with left sided facial paralysis of 18 months duration. It was preceded by several months of ipsilateral xerophthalmia. He was diagnosed with Bell's Palsy, which failed...
  • Chapter 1

    Chapter 1

    Chapter 8 Goals Explain why a sample is the only feasible way to learn about a population ... -tailed distributions converge toward normal when n > 30 Look at picture on page 265 * Central Limit Theorem We can reason...
  • Welcome to Starry Monday at Otterbein Astronomy Lecture

    Welcome to Starry Monday at Otterbein Astronomy Lecture

    Incomplete understanding of gravitation Modified Newtonian Dynamics (MOND) Nonsymmetric gravity General relativity What General Relativity tells us The more mass there is in the universe, the more the expansion of the cosmos slows down So the game is: Mass vs....
  • Aboriginal and Torres Strait Islander ANZACS: the silence

    Aboriginal and Torres Strait Islander ANZACS: the silence

    Anzac Day is a national holiday and almost every city and town in Australia holds a march of returned service men and wreath laying ceremonies at localised war memorials.(Commonwealth of Australia, 2010a, 2010b) International Aboriginal War Involvement: War. Year.
  • ARVs & DDIs in pregnancy Dr. Angela Colbers,

    ARVs & DDIs in pregnancy Dr. Angela Colbers,

    RTV boosted (DRV/RTV QD) AUC total 34-35%. AUC unbound 20-34%. AUC DRV total 50-56%. AUC DRV unbound 40-55%. Poster: Mark . Mirochnick presents data from P1026 (IMPAACT) Hier beginnen met: Naast de bekende en vanzelfsprekende veranderingen die elke zwangere vrouw...
  • CS 101 Todays class will begin about 5

    CS 101 Todays class will begin about 5

    We will get everybody registered for a lab section that fits their schedule Exams There will be three midterms, all pledged 21 September, 18 October, 16 November There will be three lab quizzes, all pledged During lab sections the week...
  • Drug Identification & Toxicology

    Drug Identification & Toxicology

    Drug Identification & Toxicology. Toxicology:. The study of poisons. Identification of drugs a person may have used . Effects of drugs on the body. Objective: SWBAT Define key vocabulary terms associated with the toxicology unit.
  • MYHR June 2011 Report - Tech Mahindra

    MYHR June 2011 Report - Tech Mahindra

    You can send your request to [email protected] (Shekhar Kshirsagar) techmahindra.com for additional provident fund deduction with your full name, employee ID and % of basic towards additional PF contribution b. For further details on VPF please visit Payroll FAQ on...