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Double electromagnetically induced transparency in a four-level lambda atomic system with doppler broadening 具有多普勒增宽的四级λ原子系统中的双电磁诱导透明度
Communications in Physics Pub Date : 2023-12-04 DOI: 10.15625/0868-3166/18214
Hiền Nguyễn Thị Thu, Bang Nguyen Huy, Doai Le Van, D. Hoang Minh
{"title":"Double electromagnetically induced transparency in a four-level lambda atomic system with doppler broadening","authors":"Hiền Nguyễn Thị Thu, Bang Nguyen Huy, Doai Le Van, D. Hoang Minh","doi":"10.15625/0868-3166/18214","DOIUrl":"https://doi.org/10.15625/0868-3166/18214","url":null,"abstract":"In this paper, we study the formation of two electromagnetically induced transparency (EIT) windows in a four-level lambda atomic system with Doppler broadening. The depth and the width of the EIT windows are easily changed by adjusting the intensity of the controlling laser fields. Meanwhile, the position of the EIT windows is also easily shifted by changing the frequency of the laser fields. In particular, by turning on or off one of the two coupling laser fields, the probe field response can be switched between one or two EIT window regimes, i.e., it is possible to switch between absorption and transparency regimes, and vice versa. In addition, our analytical model also allows one to investigate the influence of temperature (or Doppler width) on EIT windows, which is necessary for experimental observations as well as related applications at room temperature.","PeriodicalId":10571,"journal":{"name":"Communications in Physics","volume":"36 16","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138603641","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
Studying the Luminosity Function of Lyman Alpha Emitters Selected Behind 17 Lensing Clusters from Multi-Unit Spectroscopic Explorer (MUSE/VLT) Observations. 研究从多单元光谱探测器（MUSE/VLT）观测中选取的 17 个 Lensing 星团背后的莱曼阿尔法发射器的光度函数。
Communications in Physics Pub Date : 2023-12-04 DOI: 10.15625/0868-3166/17734
Tran Thi Thai, Tuan Anh Pham, ROSER PELLO, Ilias Goovaerts, Muse Consortium
{"title":"Studying the Luminosity Function of Lyman Alpha Emitters Selected Behind 17 Lensing Clusters from Multi-Unit Spectroscopic Explorer (MUSE/VLT) Observations.","authors":"Tran Thi Thai, Tuan Anh Pham, ROSER PELLO, Ilias Goovaerts, Muse Consortium","doi":"10.15625/0868-3166/17734","DOIUrl":"https://doi.org/10.15625/0868-3166/17734","url":null,"abstract":"Studying the Luminosity Function of Lyman Alpha Emitters Selected Behind 17 Lensing Clusters from Multi-Unit Spectroscopic Explorer (MUSE/VLT) Observations.","PeriodicalId":10571,"journal":{"name":"Communications in Physics","volume":"62 23","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138604794","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 the segmented plastic scintillation detector GARi for studying $r$-process nucleosynthesis at RIBF 开发分段式塑料闪烁探测器 GARi，用于研究 RIBF 的 $r$ 过程核合成
Communications in Physics Pub Date : 2023-12-04 DOI: 10.15625/0868-3166/17704
Minh Hue Bui, Ho Phong Vi, Shunji Nishimura
{"title":"Development of the segmented plastic scintillation detector GARi for studying $r$-process nucleosynthesis at RIBF","authors":"Minh Hue Bui, Ho Phong Vi, Shunji Nishimura","doi":"10.15625/0868-3166/17704","DOIUrl":"https://doi.org/10.15625/0868-3166/17704","url":null,"abstract":"(beta)-decay properties of very neutron-rich nuclei, such as the half-life and the (beta)-delayed neutron emission probabilities, play an essential role in the astrophysical rapid neutron capture process (r-process), where elements heavier than iron may be synthesized. Investigating those crucial properties has been one of the main objectives of the experimental programs at the RIKEN RI Beam Factory (RIBF). Recently, the development of a fast-timing detector system comprising a highly segmented plastic scintillation detector GARi (Gas-cell Active detector for Radioisotope decay), a neutron time-of-flight detector array, and a LaBrtextsubscript{3} detector array is being conducted for the measurement of (beta)-delayed neutron emission and other related (beta)-decay properties of neutron-rich nuclei at the F11 decay station of RIBF. The GARi detector has been constructed from a fast, segmented plastic scintillator coupled with nine multi-anode photomultiplier tubes (PMTs), resulting in enhanced position sensitivity. Therefore, this detector can be employed as an implantation detector and can also serve as a trigger signal in neutron time-of-flight experiments. This work details the development of the GARi detector and the results tested with the radioactive sources.","PeriodicalId":10571,"journal":{"name":"Communications in Physics","volume":"7 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138603003","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
Circumgalactic Enrichment in Local Dwarf Galaxies as Probed by Star-Formation Driven Outflows 恒星形成驱动外流探测到的本地矮星系的环银河富集现象
Communications in Physics Pub Date : 2023-12-04 DOI: 10.15625/0868-3166/17728
Michael Romano
{"title":"Circumgalactic Enrichment in Local Dwarf Galaxies as Probed by Star-Formation Driven Outflows","authors":"Michael Romano","doi":"10.15625/0868-3166/17728","DOIUrl":"https://doi.org/10.15625/0868-3166/17728","url":null,"abstract":"Galactic feedback driven by massive stars and active galactic nuclei plays a fundamen-tal role in regulating galaxy formation and evolution. In particular, intense starburst episodes can generate strong outflows able to suppress star formation by expelling large amount of dust and metals out of the galaxies, possibly enriching their circum (or even inter) galactic media. Local dwarf galaxies are particularly sensitive to feedback processes and offer a unique opportunity to study these phenomena in great details. We search for outflow signatures in a sample of ∼ 30 lo-cal dwarf galaxies drawn from the Dwarf Galaxy Survey. We make use of Herschel/PACS archival data to detect atomic outflows in the broad wings of observed [CII] 158 µm line profiles. We find that atomic outflows in these galaxies have typical mass-loading factors consistent with unity and velocities high enough to bring gas and dust outward. Our results can be used as input for chemical models, posing new constraints on the processes of dust growth and destruction in the interstellar medium of galaxies.","PeriodicalId":10571,"journal":{"name":"Communications in Physics","volume":"31 29","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138601603","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
Big-bang Nucleosynthesis on a bubble universe nucleated in Kerr-AdS5. 在 Kerr-AdS5 中成核的气泡宇宙上的大爆炸核合成。
Communications in Physics Pub Date : 2023-12-04 DOI: 10.15625/0868-3166/17900
Issei Koga, Akira Dohi, Naritaka Oshita, Kazushige Ueda
{"title":"Big-bang Nucleosynthesis on a bubble universe nucleated in Kerr-AdS5.","authors":"Issei Koga, Akira Dohi, Naritaka Oshita, Kazushige Ueda","doi":"10.15625/0868-3166/17900","DOIUrl":"https://doi.org/10.15625/0868-3166/17900","url":null,"abstract":"Modelling the Galactic chemical evolution (GCE) of short-lived radioisotopes (SLRs, with half-lives of the order of million years) can provide timing information on recent nucleosynthesis. The knowledge of their spatial distribution throughout the interstellar medium (ISM) is crucial. We are using a three-dimensional GCE model to investigate the evolution of four SLRs: (^{53})Mn from supernovae of type Ia (SNeIa), (^{60})Fe from core-collapse supernovae (CCSNe), (^{182})Hf from stellar winds from intermediate mass stars (IMSs), and (^{244})Pu from neutron star mergers (NSMs) to explain the recent (within the last $approx 1 -- 20$ Myr) deposition of live SLRs into deep-sea reservoirs. We find that although these SLRs are produced at very different nucleosynthetic sites, they are deposited on Earth conjointly.","PeriodicalId":10571,"journal":{"name":"Communications in Physics","volume":"22 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138604101","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
Galactic Chemical Evolution with the short lived radioisotopes (^{53}textbf{Mn}), (^{60}textbf{Fe}), (^{182}textbf{Hf}), and (^{244}textbf{Pu}) 使用短寿命放射性同位素（(^{53}textbf{Mn}）、（(^{60}textbf{Fe}）、（(^{182}textbf{Hf}）和（(^{244}textbf{Pu}）的银河化学演变
Communications in Physics Pub Date : 2023-09-18 DOI: 10.15625/0868-3166/17727
Benjamin Wehmeyer, Andr´es Yag¨ue L´opez, Benoit Cˆot´e, Maria K. Pet˝o, Chiaki Kobayashi, Maria Lugaro
{"title":"Galactic Chemical Evolution with the short lived radioisotopes (^{53}textbf{Mn}), (^{60}textbf{Fe}), (^{182}textbf{Hf}), and (^{244}textbf{Pu})","authors":"Benjamin Wehmeyer, Andr´es Yag¨ue L´opez, Benoit Cˆot´e, Maria K. Pet˝o, Chiaki Kobayashi, Maria Lugaro","doi":"10.15625/0868-3166/17727","DOIUrl":"https://doi.org/10.15625/0868-3166/17727","url":null,"abstract":"Modelling the Galactic chemical evolution (GCE) of short-lived radioisotopes (SLRs, with half-lives of the order of million years) can provide timing information on recent nucleosynthesis. The knowledge of their spatial distribution throughout the interstellar medium (ISM) is crucial. We are using a three-dimensional GCE model to investigate the evolution of four SLRs: (^{53})Mn from supernovae of type Ia (SNeIa), (^{60})Fe from core-collapse supernovae (CCSNe), (^{182})Hf from stellar winds from intermediate mass stars (IMSs), and (^{244})Pu from neutron star mergers (NSMs) to explain the recent (within the last $approx 1 -- 20$ Myr) deposition of live SLRs into deep-sea reservoirs. We find that although these SLRs are produced at very different nucleosynthetic sites, they are deposited on Earth conjointly.","PeriodicalId":10571,"journal":{"name":"Communications in Physics","volume":"103 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139338992","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
Investigation of Elemental Deposition in Lamdong Province (Vietnam) by the Moss Biomonitoring Method and Neutron Activation Analysis 利用苔藓生物监测方法和中子活化分析研究越南兰东省的元素沉积
Communications in Physics Pub Date : 2023-09-05 DOI: 10.15625/0868-3166/18266
Thi Minh Sang Nguyen, Anh Son Nguyen, L. Khiem, Thi Thanh Tran Le, Tuan Anh Tran, Huu Thang Ho, I. Zinicovscaia, M. Frontasyeva, Dai Nam Le, Thi Xuan Thai Nguyen
{"title":"Investigation of Elemental Deposition in Lamdong Province (Vietnam) by the Moss Biomonitoring Method and Neutron Activation Analysis","authors":"Thi Minh Sang Nguyen, Anh Son Nguyen, L. Khiem, Thi Thanh Tran Le, Tuan Anh Tran, Huu Thang Ho, I. Zinicovscaia, M. Frontasyeva, Dai Nam Le, Thi Xuan Thai Nguyen","doi":"10.15625/0868-3166/18266","DOIUrl":"https://doi.org/10.15625/0868-3166/18266","url":null,"abstract":"The results of an investigation of heavy metal air pollution in Lamdong province (Vietnam) using the moss biomonitoring method are presented in this paper. Barbula Indica moss samples were collected at 30 different locations in Dalat and Baoloc, two major cities of Lamdong province. The concentrations of 10 heavy metal and metalloid elements, Sc, V, Cr, Mn, Fe, Co, Zn, As, Hf, and Ta in the collected moss samples, were determined by the neutron activation analysis method using the nuclear reactor at the Nuclear Research Institute in Dalat. The results show that the air in Lamdong province may be polluted by Mn and is moderately polluted by Sc, V, Cr, Fe, Co, Zn, As, Hf and Ta. The main sources of heavy metal pollution in the Lamdong atmosphere may be soil dust, traffic emissions, industry, bauxite mining and refining, chemical fertilizers and pesticides, and combustion of coal and oil. By comparing heavy element concentrations in the moss from Lamdong with that of Hanoi, Thainguyen, and several European countries, it is found that heavy metal air pollution in Lamdong is much lower than in Hanoi and Thainguyen and much higher than in the European countries.","PeriodicalId":10571,"journal":{"name":"Communications in Physics","volume":"55 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83725126","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
Adsorption capacity of a hydrogen atom on the 2D silicon carbide surface 二维碳化硅表面氢原子的吸附能力
Communications in Physics Pub Date : 2023-09-05 DOI: 10.15625/0868-3166/18091
T. T. Hanh
{"title":"Adsorption capacity of a hydrogen atom on the 2D silicon carbide surface","authors":"T. T. Hanh","doi":"10.15625/0868-3166/18091","DOIUrl":"https://doi.org/10.15625/0868-3166/18091","url":null,"abstract":"Hydrogen adsorption on two-dimensional (2D) silicon carbide (SiC) was studied using molecular dynamics and ab initio calculations. By investigating a converged density functional theory (DFT) calculation, the stable adsorption sites of a hydrogen atom on the 2D SiC were found at the top sites (T­Si and T­C, of which the most stable adsorption site is T­Si). The adsorption of a hydrogen atom on 2D silicon carbide led to local structural changes in silicon carbide.","PeriodicalId":10571,"journal":{"name":"Communications in Physics","volume":"71 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86386401","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
Size-controlled synthesis of ZnO nanorods for highly sensitive NO(_2) gas sensors 用于高灵敏度NO (_2)气体传感器的ZnO纳米棒的尺寸控制合成
Communications in Physics Pub Date : 2023-08-15 DOI: 10.15625/0868-3166/18355
Lưu Hoàng Minh, Pham Thi Thuy Thu, Luong Minh Tuan, Bui Quang Thanh, Mai Thi Hue, Ta Thi Tho, Pham Van Tong
{"title":"Size-controlled synthesis of ZnO nanorods for highly sensitive NO(_2) gas sensors","authors":"Lưu Hoàng Minh, Pham Thi Thuy Thu, Luong Minh Tuan, Bui Quang Thanh, Mai Thi Hue, Ta Thi Tho, Pham Van Tong","doi":"10.15625/0868-3166/18355","DOIUrl":"https://doi.org/10.15625/0868-3166/18355","url":null,"abstract":"The nanostructure of zinc oxide has excellent potential in gas sensing applications to detect and monitor toxic gases in the atmosphere. Appropriate nanostructures can enhance the performance of gas sensors. In this study, we report the controlled fabrication of ZnO nanorods of different sizes by a simple hydrothermal method, which can be applied to detect NO2 toxic gas efficiently. The size of the nanorods was controlled by varying the amount of D-Glucose. The morphology and crystal structure of the materials were analyzed using advanced techniques such as field-emission scanning electron microscopy, X-ray diffraction patterns, and energy-dispersive X-ray spectroscopy. The sensor's response based on ZnO nanorods at 2 ppm NO2 is 13.3 and 18.8 times higher than that of 500 ppm CO and NH3, respectively. In addition, the sensor also exhibits good selectivity and repeatability for NO2 toxic gas; The optimum working temperature is about 150 oC.\u0000[H_2= H_1+ H_1 tag{1}] H2 hoac H2","PeriodicalId":10571,"journal":{"name":"Communications in Physics","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89536589","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
Effect of dipolar interaction on magnetic properties of magnetite nanoparticles system: a simulation study 偶极相互作用对磁铁矿纳米颗粒磁性能影响的模拟研究
Communications in Physics Pub Date : 2023-08-12 DOI: 10.15625/0868-3166/17642
Hoang Thanh Nguyen, T. N. Lan, Tuan N. M.
{"title":"Effect of dipolar interaction on magnetic properties of magnetite nanoparticles system: a simulation study","authors":"Hoang Thanh Nguyen, T. N. Lan, Tuan N. M.","doi":"10.15625/0868-3166/17642","DOIUrl":"https://doi.org/10.15625/0868-3166/17642","url":null,"abstract":"Superparamagnetic iron oxide nanoparticles are a potential candidate for novel research. The inter-particle interactions play a significant role in determining the overall magnetic behavior of a magnetic nanoparticle assembly, especially in dipolar interaction. In this paper, we have synthesized a practical sample and then applied an atomistic spin model simulation study with input parameters obtained from experimental measurements to investigate the influence of the dipolar interaction on the magnetic properties of Fe3O4 magnetite nanoparticles. ","PeriodicalId":10571,"journal":{"name":"Communications in Physics","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90067802","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
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