High-Repetition-Rate Grazing-Incidence Pumped X-Ray Laser Operating at 18.9 nm

Keenan, R.; Dunn, James P.; Pk, Patel; Df, Price; Rf, Smith; Vn, Shlyaptsev

doi:10.1103/physrevlett.94.103901

Cited by 196 publications

(148 citation statements)

References 17 publications

Supporting

Mentioning

142

Contrasting

Unclassified

Order By: Relevance

“…In Table III, we present results for the zeroth-, first-, and second-order Coulomb contributions, E (0) , E (1) , and E (2) , and the first-and second-order Breit-Coulomb corrections, B (1) hf and B (2) . It should be noted that corrections for the frequency-dependent Breit interaction [44] are included in the first order only.…”

Section: Excitation Energiesmentioning

confidence: 99%

“…Another difference in the first-and second-order contributions is the symmetry properties: the first-order non-diagonal matrix elements are symmetric and the second-order non-diagonal matrix elements are not symmetric. The values of E (2) [a ′ v ′ (J), av(J)] and E (2) [av(J), a ′ v ′ (J)] matrix elements differ in some cases by a factor 2-3 and occasionally have opposite signs.…”

Section: Excitation Energiesmentioning

confidence: 99%

“…The one-body second-order energy is obtained as a sum of the valence E (2) v and hole E (2) a energies with the latter being the dominant contribution. The values of E (2) 1 and B (2) 1 are non-zero only for diagonal matrix elements. Although there are 142 diagonal and 1636 non-diagonal matrix elements for (3l j 5l ′ j ′ ) (J) hole-particle states, we list only the part of odd-parity subset with J=1 in Table II and B (2) 2 , respectively.…”

Section: Excitation Energiesmentioning

confidence: 99%

“…In this table, we show the one-body and two-body second-order Coulomb contributions to the energy matrix labeled E (2) 1 and E (2) 2 , respectively. The corresponding Breit-Coulomb contributions are given in columns headed B (2) 1 and B (2) 2 .…”

Section: Excitation Energiesmentioning

confidence: 99%

“…The Ni-isoelectronic sequence has been studied extensively in connection with x-ray lasers [1,2,3,4,5,6,7,8,9,10,11]. Recently, an investigation into the use of atomic databases in simulation of Ni-like gadolinium x-ray laser was presented by King et al in Ref.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Relativistic many-body calculations of multipole (E1, M1, E2, M2, E3, and M3) transition wavelengths and rates between 3l−14l′ excited and ground states in nickel-like ions

Safronova

Hamasha

et al. 2006

Atomic Data and Nuclear Data Tables

View full text Add to dashboard Cite

Section: Excitation Energiesmentioning

confidence: 99%

Section: Excitation Energiesmentioning

confidence: 99%

Section: Excitation Energiesmentioning

confidence: 99%

Section: Excitation Energiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Relativistic many-body calculations of multipole (E1, M1, E2, M2, E3, and M3) transition wavelengths and rates between 3l−14l′ excited and ground states in nickel-like ions

Safronova

Hamasha

et al. 2006

Atomic Data and Nuclear Data Tables

View full text Add to dashboard Cite

Lasers, Extreme UV, and Soft X‐ray

Nilsen

2015

The Optics Encyclopedia

View full text Add to dashboard Cite

Three decades ago, large ICF lasers that occupied entire buildings were used as the energy sources to drive the first X‐ray lasers. Today, X‐ray lasers are tabletop, spatially coherent, high‐repetition rate lasers that enable many of the standard optical techniques such as interferometry to be extended to the soft X‐ray regime between wavelengths of 10 and 50 nm. Over the past decade, X‐ray laser performance has been improved by the use of the grazing incidence geometry, diode‐pumped solid‐state lasers, and seeding techniques. The dominant X‐ray laser schemes are the monopole collisional excitation lasers either driven by chirped pulse amplification (CPA) laser systems or capillary discharge. The CPA systems drive lasing in neon‐like or nickel‐like ions, typically in the 10–30 nm range, while the capillary system works best for neon‐like argon at 46.9 nm. Most researchers use nickel‐like ion lasers near 14 nm because they are well matched to the Mo:Si multilayer mirrors that have peak reflectivity near 13 nm and are used in many applications. The past decade has seen the birth of the X‐ray free electron laser (XFEL) that can reach wavelengths down to 0.1 nm and the inner‐shell Ne laser at 1.46 nm.

show abstract

Towards Tabletop X‐Ray Lasers

Zeitoun

Oliva

et al. 2014

Attosecond and XUV Physics

View full text Add to dashboard Cite

Short pulses in the X-ray regime offer unique opportunities for the study of ultrafast processes in biology, chemistry and physics. The absorption of X-rays can occur with high spectral selectivity for direct chemical or physical analysis, the very low diffraction limit of X-rays is useful for imaging and physical analysis, and the short wavelength supports extremely short pulses in the attosecond (1 as D 10 18 s) and even zeptosecond (1 zs D 10 21 s) range [1,2]. Over the past few years, X-ray sources have reached higher and higher intensities by either reducing the pulse duration and the size of the focal spot, or by increasing the energy available in the generating process.The availability of X-ray pulses with ultrahigh intensity has opened new avenues for nonlinear physics and ultrafast imaging (see Chapter 17). A major concern in the field of ultrafast imaging is the danger of sample decomposition due to ionization by X-rays before the diffraction image (2D or 3D) is acquired. A theoretical study by Neutze et al. proposed that the ideal light source for this type of imaging should have about 10 12 photons in a fully coherent pulse with 5 fs duration or less, and with 12 keV photon energy [3]. For soft X-ray imaging (typically 30 eV to 1 keV photon energy), the parameters differ significantly. This energy range corresponds to wavelengths from 30 nm down to 1 nm, allowing experiments with diffraction-limited resolution of a few nanometers. Unlike the case discussed by Neutze, diffraction will not occur on molecular electrons but on nanoscale structures or sample structural variation. The bulk matter structure does not evolve as fast as molecular electrons, which often acquire relativistic speed. The relevant time scales are therefore defined by the speed of sound, typically 10 4 ms 1 for the density and temperature under consideration. To reach a target spatial resolution of 1 nm, the soft X-ray pulse duration should be on the order of 100 fs to prevent blurring during image exposure at the irradiation levels considered.Soft X-rays are often absorbed by the sample, reducing the signal flux at the detector. Hence the experiments require a high energy per pulse. To find an esAttosecond and XUV Physics, First Edition. Edited by Thomas Schultz and Marc Vrakking.

show abstract

High-Repetition-Rate Grazing-Incidence Pumped X-Ray Laser Operating at 18.9 nm

Cited by 196 publications

References 17 publications

Relativistic many-body calculations of multipole (E1, M1, E2, M2, E3, and M3) transition wavelengths and rates between 3l−14l′ excited and ground states in nickel-like ions

Relativistic many-body calculations of multipole (E1, M1, E2, M2, E3, and M3) transition wavelengths and rates between 3l−14l′ excited and ground states in nickel-like ions

Lasers, Extreme UV, and Soft X‐ray

Towards Tabletop X‐Ray Lasers

Contact Info

Product

Resources

About