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Dive into the research topics where David Zumwalt is active.

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Featured researches published by David Zumwalt.


Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 2016

High accuracy position response calibration method for a micro-channel plate ion detector

Ran Hong; Arnaud Leredde; Yelena Bagdasarova; X. Fléchard; A. García; P. Müller; A. Knecht; E. Liénard; M. Kossin; Matthew Sternberg; H. E. Swanson; David Zumwalt

We have developed a position response calibration method for a micro-channel plate (MCP) detector with a delay-line anode position readout scheme. Using an {\em in situ} calibration mask, an accuracy of 8~


Physical Review Letters | 2012

Precision Measurement of the 6He Half-Life and the Weak Axial Current in Nuclei

A. Knecht; Ran Hong; David Zumwalt; B. G. Delbridge; A. García; P. Müller; H. E. Swanson; I. S. Towner; S. Utsuno; W. Williams; C. Wrede

\mu


arXiv: Nuclear Experiment | 2013

Weak interaction studies with 6He

A. Knecht; Z. T. Alexander; Yelena Bagdasarova; T. M. Cope; B. G. Delbridge; X. Fléchard; A. García; Ran Hong; E. Liénard; P. Mueller; O. Naviliat-Cuncic; A.S.C. Palmer; R. G. H. Robertson; Derek Storm; H. E. Swanson; S. Utsuno; Frederik Wauters; W. Williams; C. Wrede; David Zumwalt

m and a resolution of 85~


Physical Review A | 2017

Charge-state distribution of Li ions from the β decay of laser-trapped He6 atoms

Ran Hong; Arnaud Leredde; Yelena Bagdasarova; Xavier Fléchard; Alejandro García; A. Knecht; P. Müller; O. Naviliat-Cuncic; Joben Pedersen; Eric Alden Smith; Matthew Sternberg; Derek Storm; Herbert. Erik Swanson; Frederik Wauters; David Zumwalt

\mu


XXIX International Conference on Photonic, Electronic, and Atomic Collisions (ICPEAC2015) | 2015

Laser trapped 6He as a probe of the weak interaction and a test of the sudden approximation

Arnaud Leredde; Yelena Bagdasarova; K. Bailey; X. Fléchard; A Knecht; A. García; Ran Hong; E. Liénard; P. Müller; O. Naviliat-Cuncic; Thomas O'Connor; Matthew Sternberg; Derek Storm; Erik Swanson; Frederik Wauters; David Zumwalt

m (FWHM) have been achieved for MeV-scale


Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 2011

A high-intensity source of 6He atoms for fundamental research

A. Knecht; David Zumwalt; B. G. Delbridge; A. García; G. Harper; Ran Hong; P. Müller; A.S.C. Palmer; R. G. H. Robertson; H.E. Swanson; S. Utsuno; D.I. Will; W. Williams; C. Wrede

\alpha


Physical Review C | 2012

Precision measurement of the 6He half-life and the weak axial current in nuclei

A. Knecht; Ran Hong; David Zumwalt; B. G. Delbridge; A. García; P. Müller; H. E. Swanson; I. S. Towner; S. Utsuno; W. Williams; C. Wrede

particles and ions with energies of


Bulletin of the American Physical Society | 2016

Measurement of the electron shake-off in the

Ran Hong; Yelena Bagdasarova; Alejandro L. Garcia; Derek Storm; Matthew Sternberg; Erik Swanson; Frederik Wauters; David Zumwalt; K. Bailey; Arnaud Leredde; P. Mueller; T. P. O’Connor; X. Fléchard; Etienne Liennard; A. Knecht; O. Naviliat-Cuncic

\sim


Bulletin of the American Physical Society | 2015

\beta

Yelena Bagdasarova; Alejandro Garicia; Ran Hong; Matthew Sternberg; Derek Storm; Erik Swanson; Frederik Wauters; David Zumwalt; Arnaud Leredde; K. Bailey; P. Mueller; Thomas O'Connor; X. Fléchard; E. Liénard; O. Naviliat-Cuncic

10~keV. For high statistics experiments, this method can be directly employed with the experimental data without any dedicated calibration runs. The improved performance of the MCP detector can find applications in many fields of AMO and nuclear physics. In our case, it helps reducing systematic uncertainties in a high-precision nuclear


Bulletin of the American Physical Society | 2015

-decay of laser-trapped

Arnaud Leredde; K. Bailey; P. Mueller; Thomas O'Connor; Yelena Bagdasarova; Alejandro L. Garcia; Ran Hong; Matthew Sternberg; Derek Strom; Erik Swanson; Frederik Wauters; David Zumwalt; X. Fléchard; E. Liénard; Oscar Naviliat Cuncic

\beta

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Ran Hong

University of Washington

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A. Knecht

University of Washington

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P. Mueller

Argonne National Laboratory

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Derek Storm

University of Washington

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Arnaud Leredde

Argonne National Laboratory

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Erik Swanson

University of Washington

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K. Bailey

Argonne National Laboratory

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