Capillary discharge soft X-ray lasing in Ne-like Ar pumped by low main current pulses

Xie, Yong‐Rong; Zhao, Y. P.; Mo, Mianzhen; Liu, T.; Wang, Q.

doi:10.1134/s1054660x08120220

Cited by 7 publications

(4 citation statements)

References 9 publications

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“…It becomes a tool to elucidate the problem of solid state physics, nanotechnology, and life science. [7][8][9] Concerning the generation of a shorter wavelength SXRL pumped by capillary discharge scheme, much effort has been made resulting in an amplification of a 13.2 nm Ni-like Cd line and a 18.2 nm H-like C VI recombination line. There has been a great advance owing to the recent progress in the pulsed power technology.…”

Section: Magnetohydrodynamics Control Of Capillary Z-pinch Discharge mentioning

confidence: 99%

Magnetohydrodynamics control of capillary Z-pinch discharge by using a triangular current pulse for lasing a H-like N recombination soft x-ray laser

Sakai

Takahashi

Hosokai

et al. 2010

Journal of Applied Physics

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In expansion cooling phase of pinched nitrogen plasma generated by fast capillary discharge, it might be possible to realize lasing a Blamer ␣ recombination SXRL, which requires a rapid cooling of nonequilibrium plasma. It is effective to decrease the discharge current rapidly in reducing the additional heating caused by the joule heating and the magnetic compression of plasma as quickly as possible. The shaping of discharge current waveform was demonstrated with a transmission line and its effect on expanding plasma dynamics were investigated through magnetohydrodynamics ͑MHD͒ calculation, and validity of the MHD calculation in the expansion phase was shown using the discharge photographs taken by using a high speed camera. As a result, strong radiation from the H-like N ion at the maximum pinch, which is in the current decay phase of the triangular current with peak amplitude of over 70 kA and pulse width of 60 ns, has been confirmed in x-ray photodiode signals at wavelength of less than 2.5 nm, to clarify the existence of the Lyman series and continuum of the H-like N ion. Without additional heating by the discharge current after the generation of the fully stripped nitrogen ions, it might be possible to generate the population inversion between the principal quantum number n = 2 and 3.

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Section: Magnetohydrodynamics Control Of Capillary Z-pinch Discharge mentioning

confidence: 99%

Magnetohydrodynamics control of capillary Z-pinch discharge by using a triangular current pulse for lasing a H-like N recombination soft x-ray laser

Sakai

Takahashi

Hosokai

et al. 2010

Journal of Applied Physics

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“…Taking advantage of a pulsed power system consisting of a Marx generator, a water capacitor and a gap switch, it is possible to generate such a high-density and high-temperature long plasma column by using only several hundreds of joules in a laboratory scale. [4][5][6][7][8][9] More recently, in 2005, making use of a very low inductance coaxial configuration without a Marx generator, lasing of 46.9 nm Ne-like Ar laser at a repetition rate of 12 Hz was also demonstrated, resulting in a significant decrease in the size of pumping device to a desktop size. 10 Concerning the generation of a shorter wavelength SXRL pumped by capillary discharge scheme, much effort has been made resulting in an amplification of a 13.2 nm Ni-like Cd line and a 18.2 nm H-like C VI recombination line.…”

Section: Introductionmentioning

confidence: 99%

Highly efficient pulsed power supply system with a two-stage LC generator and a step-up transformer for fast capillary discharge soft x-ray laser at shorter wavelength

Sakai

Takahashi

Komatsu

et al. 2010

Review of Scientific Instruments

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Highly efficient and compact pulsed power supply system for a capillary discharge soft x-ray laser (SXRL) has been developed. The system consists of a 2.2 microF two-stage LC inversion generator, a 2:54 step-up transformer, a 3 nF water capacitor, and a discharge section with a few tens of centimeter length capillary. Adoption of the pulsed transformer in combination with the LC inversion generator enables us to use only one gap switch in the circuit for charging the water capacitor up to about 0.5 MV. Furthermore, step-up ratio of a water capacitor voltage to a LC inversion generator initial charging voltage is about 40 with energy transfer efficiency of about 50%. It also leads to good reproducibility of a capillary discharge which is necessary for lasing a SXRL stably. For the study of the possibility of lasing a SXRL at shorter wavelength in a small laboratory scale, high-density and high-temperature plasma column suitable for the laser can be generated relatively easily with this system.

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“…Уступая импульсным лазерам, которые в настоящее время являются наиболее мощными лабораторными источниками энергии, сильноточные Z-разряды успешно применяются для получения и исследования плотной неравновесной плазмы, импульсных источников нейтронов и коротковолнового излучения. Определенные позиции Z-разряды капиллярного типа занимают в работах по созданию источников когерентного излучения в экстремальном ультрафиолетовом и мягком рентгеновском спектральных диапазонах [1][2][3][4][5][6][7][8][9]. Одна из основных целей, на достижение которой направлены исследования мощных электрических разрядов, состоит в получении плазмы с температурой, плотностью, степенью ионизации и другими характеристиками, необходимыми для решения тех или иных прикладных задач.…”

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Ступенчатое Сжатие Плазмы Многозарядных Ионов В Протяженном Продольном Малоиндуктивном Сильноточном Z-Разряде

Бурцев¹,

Калинин²

2019

Письма В Журнал Технической Физики

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The features of the multicharged ion plasma dynamics in the extended low-inductive high-current discharge with power supply system based on high-voltage generator and transmission lines was analyzed. It is shown that the power supply systems of the considered type allow one to obtain the stepwise plasma compression and heating, which creates additional programming possibilities for physical and spectroscopic characteristics, in particular, of the ionic composition of the plasma.

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Capillary discharge soft X-ray lasing in Ne-like Ar pumped by low main current pulses

Cited by 7 publications

References 9 publications

Magnetohydrodynamics control of capillary Z-pinch discharge by using a triangular current pulse for lasing a H-like N recombination soft x-ray laser

Magnetohydrodynamics control of capillary Z-pinch discharge by using a triangular current pulse for lasing a H-like N recombination soft x-ray laser

Highly efficient pulsed power supply system with a two-stage LC generator and a step-up transformer for fast capillary discharge soft x-ray laser at shorter wavelength

Ступенчатое Сжатие Плазмы Многозарядных Ионов В Протяженном Продольном Малоиндуктивном Сильноточном Z-Разряде

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