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Measurement of the ^{229}Th Isomer Energy with a Magnetic Microcalorimeter.
A measurement of the low-energy (0-60 keV) γ-ray spectrum produced in the α decay of ^{233}U using a dedicated cryogenic magnetic microcalorimeter and four complementary evaluation schemes is presented. Expand
Absolute X-ray energy measurement using a high-accuracy angle encoder.
The proposed system enables the prompt and rapid in situ measurement of photon energies over a wide energy range and uses a reference silicon single-crystal plate and a highly accurate angle encoder called SelfA. Expand
The thorium-229 low-energy isomer and the nuclear clock
The 229Th nucleus has an isomeric state at an energy of about 8 eV above the ground state, several orders of magnitude lower than typical nuclear excitation energies. This has inspired theExpand
Nuclear Excitation of the ^{229}Th Isomer via Defect States in Doped Crystals.
It is shown that although previously viewed as a nuisance, the defect states provide a starting point for nuclear excitation via electronic bridge mechanisms involving stimulated emission or absorption using an optical laser. Expand
Driven electronic bridge processes via defect states in Th229 -doped crystals
Brenden S. Nickerson, ∗ Martin Pimon, Pavlo V. Bilous, 1 Johannes Gugler, Georgy A. Kazakov, Tomas Sikorsky, Kjeld Beeks, Andreas Grüneis, 2 Thorsten Schumm, and Adriana Pálffy 1, †Expand
Exciting the Thorium-229 isomer in a crystal
The isomer of Th-229 is the only excited nuclear state known today that could be excited by current laser technology. Its extremely low energy (8.26 eV [1]) stems from its unique elliptical shapeExpand