Journal of the Optical Society of America and Review of Scientific Instruments最新文献_第9页

Design, development, and instrumentation of isopiestic experimental setup. 等静力实验装置的设计、开发及仪器。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-04-01 DOI: 10.1063/5.0077715

S. S. Kumar, G. Prasad, J. P. Rao, V. Kumar, R. Ganesan, V. Jayaraman

引用次数: 1

Application of high precision wavelength calibration method for plasmas rotation measurement based on Fabry-Pérot etalon on experimental advanced superconducting tokamak. 基于fabry - p<s:1>标准子的等离子体旋转测量高精度波长校准方法在实验性先进超导托卡马克上的应用。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-04-01 DOI: 10.1063/5.0083784

Shengyu Fu, Xianghui Yin, J. Fu, Yingying Li, Fudi Wang, Hongming Zhang, C. Bae, B. Lyu, Qianhong Huang, Yongcai Shen, Yichao Li, Liang He, Yifei Jin, X. Gong

{"title":"Application of high precision wavelength calibration method for plasmas rotation measurement based on Fabry-Pérot etalon on experimental advanced superconducting tokamak.","authors":"Shengyu Fu, Xianghui Yin, J. Fu, Yingying Li, Fudi Wang, Hongming Zhang, C. Bae, B. Lyu, Qianhong Huang, Yongcai Shen, Yichao Li, Liang He, Yifei Jin, X. Gong","doi":"10.1063/5.0083784","DOIUrl":"https://doi.org/10.1063/5.0083784","url":null,"abstract":"Analyzing the radiation spectra of impurity ions is a widely applied diagnostic scheme for plasma ion temperature and rotation measurements on tokamaks. High precision wavelength calibration is a prerequisite for the accurate measurement of plasma parameters, especially for plasma rotation. Furthermore, the sparseness or absence of the standard spectral lines brings calibration challenges due to the narrow wavelength range. A precise wavelength calibration method is demonstrated in which the comb-like spectra generated by the Fabry-Pérot etalon can lock a series of fixed peaks as reference points in a wide wavelength range. The equal frequency intervals of the comb-like spectra are further corrected using several characteristic neon lines of known wavelengths. The experimental results indicate that the wavelength accuracy obtained by this calibration method is less than 0.005 nm, which corresponds to a rotation speed of 2.3 km/s in the toroidal direction for the beam emission spectroscopy spectrometer installed on the experimental advanced superconducting tokamak. Taking the O V(650.024 nm, n = 4 → 3) line as an example, the maximum difference in the oxygen ion rotation velocity is 3.8 km/s for the absolute rotation of ∼25 km/s, when compared with the calibration results of a standard lamp.","PeriodicalId":54761,"journal":{"name":"Journal of the Optical Society of America and Review of Scientific Instruments","volume":"50 7 1","pages":"043504"},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91002121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Objective evaluation of wearable thermoelectric generator: From platform building to performance verification. 可穿戴热电发电机的客观评价:从搭建平台到性能验证。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-04-01 DOI: 10.1063/5.0087672

Zhuoming Xu, Dongwang Yang, Xiong Yuan, Siheng Hua, Hanjing You, Yubing Xing, Kai Hu, Jiang Wang, Yani Xiao, Yonggao Y. Yan, Xinfeng Tang

{"title":"Objective evaluation of wearable thermoelectric generator: From platform building to performance verification.","authors":"Zhuoming Xu, Dongwang Yang, Xiong Yuan, Siheng Hua, Hanjing You, Yubing Xing, Kai Hu, Jiang Wang, Yani Xiao, Yonggao Y. Yan, Xinfeng Tang","doi":"10.1063/5.0087672","DOIUrl":"https://doi.org/10.1063/5.0087672","url":null,"abstract":"Wearable thermoelectric generators can harvest heat from the human body to power an intelligent electronic device, which plays an important role in wearable electronics. However, due to the complexity of human skin, there is still no unified standard for performance testing of wearable thermoelectric generators under wearable conditions. Herein, a test platform suitable for a wearable thermoelectric generator was designed and built by simulating the structure of the arm. Based on the biological body temperature regulation function, water flow and water temperature substitute blood flow and blood temperature, the silicone gel with some thickness simulates the skin layer of the human arm, thus achieving the goal of adjusting the thermal resistance of human skin. Meanwhile, the weight is used as the contact pressure to further ensure the reliability and accuracy of the test data. In addition, the environment regulatory system is set up to simulate the outdoor day. Actually, the maximum deviation of the performance of the thermoelectric generator worn on the test platform and human arm is ∼5.2%, indicating the accuracy of objective evaluation.","PeriodicalId":54761,"journal":{"name":"Journal of the Optical Society of America and Review of Scientific Instruments","volume":"1 1","pages":"045105"},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91242748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

A GPS-enabled seabed sediment sampler: Recovery efficiency and efficacy. 具有gps功能的海底沉积物采样器:回收效率和效果。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-04-01 DOI: 10.1063/5.0077269

W. Hunt, M. J. Joyce

引用次数: 0

Comparative analysis of recirculating and collimating cesium ovens. 循环式和准直式铯炉的对比分析。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-04-01 DOI: 10.1063/5.0085838

R. Hahn, T. Battard, Oscar Boucher, Y. Picard, H. Lignier, D. Comparat, Nolwenn-Amandine Keriel, Colin Lopez, Emanuel Oswald, M. Reveillard, M. Viteau

引用次数: 3

A concept of a broadband inverted geometry spectrometer for the Second Target Station at the Spallation Neutron Source. 散裂中子源第二靶站宽带倒几何谱仪的概念。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-04-01 DOI: 10.1063/5.0086451

E. Mamontov, C. Boone, M. Frost, K. Herwig, T. Huegle, J. Y. Y. Lin, B. McCormick, W. McHargue, A. Stoica, P. Torres, W. Turner

{"title":"A concept of a broadband inverted geometry spectrometer for the Second Target Station at the Spallation Neutron Source.","authors":"E. Mamontov, C. Boone, M. Frost, K. Herwig, T. Huegle, J. Y. Y. Lin, B. McCormick, W. McHargue, A. Stoica, P. Torres, W. Turner","doi":"10.1063/5.0086451","DOIUrl":"https://doi.org/10.1063/5.0086451","url":null,"abstract":"BWAVES is an acronym for Broadband Wide-Angle VElocity Selector spectrometer, indicating that a novel WAVES (Wide-Angle VElocity Selector) device will be used to select the velocity/wavelength of the detected neutrons after they are scattered by the sample. We describe a conceptual design of BWAVES, a time-of-flight broadband inverted-geometry neutron spectrometer for the Second Target Station at the Spallation Neutron Source operated by Oak Ridge National Laboratory. Being the first inverted geometry spectrometer where the energy of the detected neutrons can be chosen by a WAVES device mechanically, irrespective of the limitations imposed by the crystal analyzers or filters, BWAVES will feature a uniquely broad, continuous dynamic range of measurable energy transfers, spanning 4.5 decades. This will enable measurements of both vibrational and relaxational excitations within the same, continuous scattering spectra. Novel approaches that are necessary for the implementation of a WAVES device at the BWAVES spectrometer will result in a spectrometer with the design and characteristics much different from those displayed by the neutron spectrometers in existence today.","PeriodicalId":54761,"journal":{"name":"Journal of the Optical Society of America and Review of Scientific Instruments","volume":"33 1","pages":"045101"},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83927767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Bootstrap estimation of the effect of instrument response function uncertainty on the reconstruction of fusion neutron sources. 仪器响应函数不确定性对聚变中子源重建影响的自举估计。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-04-01 DOI: 10.1063/5.0086450

Kevin M. Lamb, V. Geppert-Kleinrath, N. Birge, C. Danly, L. Divol, D. Fittinghoff, M. Freeman, A. Pak, C. Wilde, A. Zylstra, P. Volegov

{"title":"Bootstrap estimation of the effect of instrument response function uncertainty on the reconstruction of fusion neutron sources.","authors":"Kevin M. Lamb, V. Geppert-Kleinrath, N. Birge, C. Danly, L. Divol, D. Fittinghoff, M. Freeman, A. Pak, C. Wilde, A. Zylstra, P. Volegov","doi":"10.1063/5.0086450","DOIUrl":"https://doi.org/10.1063/5.0086450","url":null,"abstract":"Neutron imagers are important diagnostics for the inertial confinement fusion implosions at the National Ignition Facility. They provide two- and three-dimensional reconstructions of the neutron source shape that are key indicators of the overall performance. To interpret the shape results properly, it is critical to estimate the uncertainty in those reconstructions. There are two main sources of uncertainties: limited neutron statistics, leading to random errors in the reconstructed images, and incomplete knowledge of the instrument response function (the pinhole-dependent point spread function). While the statistical errors dominate the uncertainty for lower yield deuterium-tritium (DT) shots, errors due to the instrument response function dominate the uncertainty for DT yields on the order of 1016 neutrons or higher. In this work, a bootstrapping method estimates the uncertainty in a reconstructed image due to the incomplete knowledge of the instrument response function. The main reconstruction is created from the fixed collection of pinhole images that are best aligned with the neutron source. Additional reconstructions are then built using subsets of that collection of images. Variations in the shapes of these additional reconstructions originate solely from uncertainties in the instrument response function, allowing us to use them to provide an additional systematic uncertainty estimate.","PeriodicalId":54761,"journal":{"name":"Journal of the Optical Society of America and Review of Scientific Instruments","volume":"29 1","pages":"043508"},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78580219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of a high-efficiency gaseous elemental radioiodine generator. 高效气态元素放射性碘发生器的研制。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-04-01 DOI: 10.1063/5.0086793

C. Zhao, Y. Chen, J. Liu

引用次数: 0

Development of a near-5-Kelvin, cryogen-free, pulse-tube refrigerator-based scanning probe microscope. 近5开尔文，无低温，基于脉冲管制冷机的扫描探针显微镜的研制。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-04-01 DOI: 10.1063/5.0084888

J. Kasai, Tomoki Koyama, M. Yokota, K. Iwaya

{"title":"Development of a near-5-Kelvin, cryogen-free, pulse-tube refrigerator-based scanning probe microscope.","authors":"J. Kasai, Tomoki Koyama, M. Yokota, K. Iwaya","doi":"10.1063/5.0084888","DOIUrl":"https://doi.org/10.1063/5.0084888","url":null,"abstract":"We report the design and performance of a cryogen-free, pulse-tube refrigerator (PTR)-based scanning probe microscopy (SPM) system capable of operating at a base temperature of near 5 K. We achieve this by combining a home-made interface design between the PTR cold head and the SPM head, with an automatic gas-handling system. The interface design isolates the PTR vibrations by a combination of polytetrafluoroethylene and stainless-steel bellows and by placing the SPM head on a passive vibration isolation table via two cold stages that are connected to thermal radiation shields using copper heat links. The gas-handling system regulates the helium heat-exchange gas pressures, facilitating both the cooldown to and maintenance of the base temperature. We discuss the effects of each component using measured vibration, current-noise, temperature, and pressure data. We demonstrate that our SPM system performance is comparable to known liquid-helium-based systems with the measurements of the superconducting gap spectrum of Pb, atomic-resolution scanning tunneling microscopy image and quasiparticle interference pattern of Au(111) surface, and non-contact atomic force microscopy image of NaCl(100) surface. Without the need for cryogen refills, the present SPM system enables uninterrupted low-temperature measurements.","PeriodicalId":54761,"journal":{"name":"Journal of the Optical Society of America and Review of Scientific Instruments","volume":"21 1","pages":"043711"},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88303639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

An ion mobility mass spectrometer coupled with a cryogenic ion trap for recording electronic spectra of charged, isomer-selected clusters. 离子迁移率质谱仪与低温离子阱耦合，用于记录带电的电子能谱，异构体选择簇。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-04-01 DOI: 10.1063/5.0085680

Jack T Buntine, E. Carrascosa, J. Bull, U. Jacovella, M. I. Cotter, Patrick Watkins, Chang Liu, M. S. Scholz, B. Adamson, Samuel J P Marlton, E. Bieske

{"title":"An ion mobility mass spectrometer coupled with a cryogenic ion trap for recording electronic spectra of charged, isomer-selected clusters.","authors":"Jack T Buntine, E. Carrascosa, J. Bull, U. Jacovella, M. I. Cotter, Patrick Watkins, Chang Liu, M. S. Scholz, B. Adamson, Samuel J P Marlton, E. Bieske","doi":"10.1063/5.0085680","DOIUrl":"https://doi.org/10.1063/5.0085680","url":null,"abstract":"Infrared and electronic spectra are indispensable for understanding the structural and energetic properties of charged molecules and clusters in the gas phase. However, the presence of isomers can potentially complicate the interpretation of spectra, even if the target molecules or clusters are mass-selected beforehand. Here, we describe an instrument for spectroscopically characterizing charged molecular clusters that have been selected according to both their isomeric form and their mass-to-charge ratio. Cluster ions generated by laser ablation of a solid sample are selected according to their collision cross sections with helium buffer gas using a drift tube ion mobility spectrometer and their mass-to-charge ratio using a quadrupole mass filter. The mobility- and mass-selected target ions are introduced into a cryogenically cooled, three-dimensional quadrupole ion trap where they are thermalized through inelastic collisions with an inert buffer gas (He or He/N2 mixture). Spectra of the molecular ions are obtained by tagging them with inert atoms or molecules (Ne and N2), which are dislodged following resonant excitation of an electronic transition, or by photodissociating the cluster itself following absorption of one or more photons. An electronic spectrum is generated by monitoring the charged photofragment yield as a function of wavelength. The capacity of the instrument is illustrated with the resonance-enhanced photodissociation action spectra of carbon clusters (Cn +) and polyacetylene cations (HC2nH+) that have been selected according to the mass-to-charge ratio and collision cross section with He buffer gas and of mass-selected Au2 + and Au2Ag+ clusters.","PeriodicalId":54761,"journal":{"name":"Journal of the Optical Society of America and Review of Scientific Instruments","volume":"47 1","pages":"043201"},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88532410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8