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9 papers · 2 filters
Back-to-back emission of the electrons in double photoionization of helium
M. Ya. Amusia, E. G. Drukarev, E. Z. Liverts
We calculate the double differential distributions and distributions in recoil momenta for the high energy non-relativistic double photoionization of helium. We show that the resul…
Radiative double electron capture by bare nucleus with emission of one photon
E. A. Chernovskaya, O. Yu. Andreev, L. N. Labzowsky
Calculation of the cross-section for the process of double electron capture by bare nucleus with emission of a single photon is presented. The double electron capture is evaluated…
The trap design of PENTATRAP
C. Roux, Ch. Böhm, A. Dörr +7
A novel Penning trap tower consisting of five compensated cylindrical Penning traps is developed for the PENTATRAP mass spectrometer at the Max-Planck-Institut für Kernphysik in He…
PENTATRAP: A novel cryogenic multi-Penning trap experiment for high-precision mass measurements on highly charged ions
J. Repp, Ch. Böhm, J. R. Crespo López-Urrutia +9
The novel five-Penning trap mass spectrometer PENTATRAP is developed at the Max-Planck-Institut für Kernphysik (MPIK), Heidelberg. Ions of interest are long-lived highly charged nu…
Rotational spectrum of molecular ion NH^+ as a probe for alpha- and m_e/m_p-variation
K. Beloy, M. G. Kozlov, A. Borschevsky +3
We identify the molecular ion NH^+ as a potential candidate for probing variations in the fine structure constant alpha and electron-to-proton mass ratio mu. NH^+ has an anomalousl…
Precision calculation of blackbody radiation shifts for optical frequency metrology
M. S. Safronova, M. G. Kozlov, Charles W. Clark
We show that three group IIIB divalent ions, B+, Al+, and In+, have anomalously small blackbody radiation (BBR) shifts of the ns^2 1S0 - nsnp 3P0 clock transitions. The fractional…