5 papers
Evaluation of spatiotemporal tungsten density profiles using Unresolved Transition Arrays in the Large Helical Device
R. Nishimura, T. Oishi, I. Murakami +12
Tungsten spectroscopic studies have been conducted in the Large Helical Device with a pellet injection technique. Spatiotemporal profiles of tungsten density were evaluated using a…
Photoexcitation spectroscopy of highly charged ions for application to astronomy using a compact electron beam ion trap (EBIT) at the synchrotron radiation facility SPring-8
Leo Hirata, Yuki Amano, Moto Togawa +6
In the past few decades, X-ray astronomy satellites equipped with grating spectrometers and microcalorimeters have enabled high-resolution spectroscopic observations of astrophysic…
Puzzling Isotonic Odd-Even Staggering of Charge Radii in Deformed Rare Earth Nuclei
Endre Takacs, Hunter Staiger, Steven A. Blundell +16
The nuclear charge radius is a fundamental observable that encodes key aspects of nuclear structure, deformation, and pairing. Isotonic (constant neutron number) systematics in the…
Extreme Ultraviolet Spectroscopy of Highly Charged Lu and Yb Ions for Nuclear Charge Radius Determination
Hunter Staiger, Endre Takacs, Steven A. Blundell +16
We report a high-precision determination of the natural-abundance-averaged nuclear charge-radius difference between Yb and Lu using extreme ultraviolet (EUV) spectroscopy of highly…
A laboratory plasma experiment for X-ray astronomy using a compact electron beam ion trap (EBIT)
Yuki Amano, Leo Hirata, Moto Togawa +11
We present the basic performance and experimental results of an electron beam ion trap (JAXA-EBIT), newly introduced to the Japanese astronomical community. Accurate atomic data ar…