Ultrasmooth beryllium substrates for solar astronomy in extreme ultraviolet wavelengths

Чхало, Н. И.; Mikhailenko, M.S.; Pestov, A. E.; Полковников, В. Н.; Zorina, M. V.; Zuev, S. Yu.; Kazakov, Dmitry V.; Milkov, Alexei V.; Strulya, I. L.; Филичкина, В. А.; Kozlov, A. S.

doi:10.1364/ao.58.003652

Cited by 6 publications

(4 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Приемлемые параметры шероховатости на уровне 1.5 nm были получены при покрытии бериллия аморфным никелем с последующей его полировкой. Таким образом, на данный момент для космических телескопов рассматривается бериллиевая основа, покрытая аморфным никелем [3].…”

Section: Introductionunclassified

“…Основной методикой, обеспечивающей достижение требований ВУФ и ЭУФ диапазонов длин волн, является ионное травление. Однако в работе [3] показано, что ионная обработка никеля также не обеспечивает требуемых значений шероховатости.…”

Section: Introductionunclassified

See 1 more Smart Citation

Нанесение Жидкого Стекла На Подложки Оптических Элементов И Его Молекулярный Состав

Petrova¹,

Михайленко²,

Зорина³

et al. 2023

Журнал Технической Физики

View full text Add to dashboard Cite

show abstract

Section: Introductionunclassified

Нанесение Жидкого Стекла На Подложки Оптических Элементов И Его Молекулярный Состав

Petrova¹,

Михайленко²,

Зорина³

et al. 2023

Журнал Технической Физики

View full text Add to dashboard Cite

show abstract

“…X-ray emission has found application in many areas of science and technology, such as astronomy (Chkhalo et al. 2019), security systems (Gupta et al. 2019), X-ray microscopy (Pfeiffer 2018), lithography (Wu et al.…”

Section: Introductionmentioning

confidence: 99%

Soft X-ray emission from an anharmonic collisional nanoplasma by a laser–nanocluster interaction

Siahmazgi

Jafari

2021

J. Plasma Phys.

View full text Add to dashboard Cite

The purpose of the present paper is to investigate the generation of soft X-ray emission from an anharmonic collisional nanoplasma by a laser–nanocluster interaction. The electric field of the laser beam interacts with the nanocluster and leads to ionization of the cluster atoms, which then produces a nanoplasma. Because of the nonlinear restoring force in an anharmonic nanoplasma, the fluctuations and heating rate of, as well as the power radiated by, the electrons in the nanocluster plasma will be notably different from those arising from a linear restoring force. By comparing the nonlinear restoring force state (which arises from an anharmonic cluster) with that of the linear restoring force (in harmonic clusters), the cluster temperature specifically changes at the resonant frequency relative to the linear restoring force, while the variation of the anharmonic cluster radius is almost identical to that of the harmonic cluster radius. In addition, it is revealed that a sharp peak of X-ray emission arises after some picoseconds in deuterium, helium, neon and argon clusters.

show abstract

“…Beryllium is an important material in X-ray optics, with high transparency in several spectral ranges. It is widely used as a material for: windows of vacuum chambers, as it allows for the output of X-ray radiation; refractive lenses of synchrotron beamlines, as it allows for flexible control over beam focusing; and substrates for X-ray optical elements with high elasticity and thermal conductivity with a small mass (Beguiristain et al, 2002;Chkhalo, Mikhailenko et al, 2019;ESRF, undated). Be is one of the few transparent materials in the extreme-ultraviolet wavelength range (EUV) at energies below the K-absorption edge of 111.75 eV.…”

Section: Introductionmentioning

confidence: 99%

Optical constants of sputtered beryllium thin films determined from photoabsorption measurements in the spectral range 20.4–250 eV

Свечников

Чхало

Lopatin

et al. 2020

J Synchrotron Radiat

View full text Add to dashboard Cite

In this work, the refractive index of beryllium in the photon energy range 20.4–250 eV was experimentally determined. The initial data include measurements of the transmittance of two free-standing Be films with thicknesses of 70 nm and 152 nm, as well as reflectometric measurements of similar films on a substrate. Measurements were carried out at the optics beamline of the BESSY II synchrotron radiation source. The absorption coefficient β was found directly from the transmission coefficient of the films, and the real part of the polarizability δ was calculated from the Kramers–Kronig relations. A comparison is carried out with results obtained 20 years ago at the ALS synchrotron using a similar methodology.

show abstract

Ultrasmooth beryllium substrates for solar astronomy in extreme ultraviolet wavelengths

Cited by 6 publications

References 20 publications

Нанесение Жидкого Стекла На Подложки Оптических Элементов И Его Молекулярный Состав

Нанесение Жидкого Стекла На Подложки Оптических Элементов И Его Молекулярный Состав

Soft X-ray emission from an anharmonic collisional nanoplasma by a laser–nanocluster interaction

Optical constants of sputtered beryllium thin films determined from photoabsorption measurements in the spectral range 20.4–250 eV

Contact Info

Product

Resources

About