# Measurement of material isotopics and atom number ratio with alpha-particle spectroscopy for the NIFFTE fission Time Projection Chamber actinide target

@inproceedings{Monterial2021MeasurementOM, title={Measurement of material isotopics and atom number ratio with alpha-particle spectroscopy for the NIFFTE fission Time Projection Chamber actinide target}, author={M. Monterial and K. Schmitt and C. Prokop and E. Leal-Cidoncha and M. Anastasiou and N. Bowden and J. Bundgaard and R. Casperson and D. Cebra and T. Classen and D. H. Dongwi and N. Fotiades and J. Gearhart and V. Geppert-Kleinrath and U. Greife and C. Hagmann and M. Heffner and D. Hensle and D. Higgins and L. Isenhower and K. Kazkaz and A. Kemnitz and J. King and J. Klay and J. Latta and W. Loveland and J. Magee and B. Manning and M. Mendenhall and S. Mosby and D. Neudecker and S. Sangiorgio and B. Seilhan and L. Snyder and F. Tovesson and R. Towell and N. Walsh and T. S. Watson and L. Yao and W. Younes}, year={2021} }

We present the results of a measurement of isotopic concentrations and atomic number ratio of a double-sided actinide target using α-spectroscopy and mass spectrometry. The double-sided actinide target, with predominantly 239Pu on one side and 235U on the other, was used in the fission Time Projection Chamber (fissionTPC) for a measurement of the neutron-induced fission cross-section ratio between the two isotopes. The measured atomic number ratio is needed to extract an absolute measurement… Expand

#### Figures and Tables from this paper

#### One Citation

Measurement of the $^{239}$Pu(n,f)/$^{235}$U(n,f) Cross-Section Ratio with the NIFFTE fission Time Projection Chamber

- Physics
- 2021

The 239Pu(n,f)/235U(n,f) cross-section ratio has been measured with the fission Time Projection Chamber (fissionTPC) from 100 keV to 100 MeV. The fissionTPC provides three-dimensional reconstruction… Expand

#### References

SHOWING 1-10 OF 20 REFERENCES

A time projection chamber for high accuracy and precision fission cross-section measurements

- Physics
- 2014

Abstract The fission Time Projection Chamber (fissionTPC) is a compact (15 cm diameter) two-chamber MICROMEGAS TPC designed to make precision cross-section measurements of neutron-induced fission.… Expand

Uncertainty in Measurement of Isotope Ratios by Multi-Collector Mass Spectrometry

- Chemistry
- 2010

Multi-collector mass spectrometry, both inductively coupled plasma source (ICPMS) and thermal ionization source (TIMS), can measure isotope ratios with great precision because the ion beams from… Expand

High quality actinide targets

- Chemistry, Physics
- Journal of Radioanalytical and Nuclear Chemistry
- 2015

We prepare high quality actinide targets for studies of neutron-induced and charged-particle-induced fission. I report on our efforts to measure fragment energy loss in the target backings and to… Expand

Fission cross sections in the intermediate energy region

- Chemistry
- 1991

Until recently there has been very little cross section data for neutron-induced fission in the intermediate energy region, primarily because no suitable neutron source has existed. At Los Alamos,… Expand

The uncertainty of counting at a defined solid angle

- Physics
- 2015

Specific uncertainty components of counting at a defined solid angle are discussed. It is potentially an extremely accurate technique for primary standardisation of activity of alpha emitters and… Expand

Neutron-Induced Fission Cross-Section Ratios for 239Pu, 240Pu, 242Pu, and 244Pu Relative to 235U from 0.5 to 400 MeV

- Physics
- 1998

The fission cross-section ratios for isotopic targets of 240Pu, 242Pu, and 244Pu relative to 235U are measured for neutron energies from 0.5 to 400 MeV and for 239Pu relative to 235U for energies f...

Fission cross sections of some thorium, uranium, neptunium and plutonium isotopes relative to /sup 235/U

- Chemistry
- 1983

Earlier results from the measurements, at this Laboratory, of the fission cross sections of /sup 230/Th, /sup 232/Th, /sup 233/U, /sup 234/U, /sup 236/U, /sup 238/U, /sup 237/Np, /sup 239/Pu, /sup… Expand

Advanced alpha spectrum analysis based on the fitting and covariance analysis of dependent variables

- Physics
- 2011

Abstract The correct handling of statistical uncertainties is crucial especially when unfolding alpha spectra that contain a low number of counts or overlapping peaks from different nuclides. For… Expand

Targets for Precision Measurements

- Physics
- 2013

The general properties needed in targets (sources) for high precision, high accuracy measurements are reviewed. The application of these principles to the problem of developing targets for the… Expand

Nuclear data sheets for A = 231

- Physics
- 1971

Abstract The available experimental data pertaining to the nuclear structure of A = 231 are compiled. The data from various decay and reaction experiments are compared, and level schemes combining… Expand