Journal of Atomic, Molecular, Condensate and Nano Physics最新文献_第7页

Ultracold Rubidium Atoms Excited to Rydberg Levels 超冷铷原子被激发到里德伯能级

Journal of Atomic, Molecular, Condensate and Nano Physics Pub Date : 2015-12-28 DOI: 10.26713/JAMCNP.V2I3.336

D. Ciampini, O. Morsch, E. Arimondo

引用次数: 3

Comparative Studies of MgFe(_2)O(_4) Nanoparticles Synthesized using Different Precursors by Sol Gel Auto Combustion Method 溶胶-凝胶自燃烧法合成不同前驱体的MgFe (_2) O (_4)纳米颗粒的比较研究

Journal of Atomic, Molecular, Condensate and Nano Physics Pub Date : 2015-12-04 DOI: 10.26713/JAMCNP.V2I2.330

S. Upadhyay, K. Sreenivas

{"title":"Comparative Studies of MgFe(_2)O(_4) Nanoparticles Synthesized using Different Precursors by Sol Gel Auto Combustion Method","authors":"S. Upadhyay, K. Sreenivas","doi":"10.26713/JAMCNP.V2I2.330","DOIUrl":"https://doi.org/10.26713/JAMCNP.V2I2.330","url":null,"abstract":"Nanostructured powder of MgFe(_2)O(_4) was prepared by sol gel auto combustion method using two different precursors. It is an ultimate combination of slow and sustained gel formation and subsequent combustion. In this work, our aim is to synthesize nanoparticles of MgFe(_2)O(_4) using different precursors and to compare their relative characteristics and also to investigate that which combinations have result in better properties. The precursors of the solid were obtained from different gels of metal nitrates and metal nitrate, metal acetate with glycine used as an oxidizer and a fuel having pH value of 2 and 6, respectively. During our keenly observed processing, it was reproducibly noted that in the case of acetate-nitrate gel the self-propagation temperature was approximately 120(^circ)C-130(^circ)C while in the case of nitrate-nitrate gel the self-propagation temperature was approximately 180(^circ)C-200(^circ)C. The crystal structure, shape and grain size of the nanoparticles had been compared by XRD, SEM and TEM. VSM was used to investigate the magnetic properties of obtained powder. The hysteresis curves indicated the ferromagnetic behavior of the samples at room temperature. FTIR supports the absorption value of octahedral and tetrahedral sites.","PeriodicalId":239838,"journal":{"name":"Journal of Atomic, Molecular, Condensate and Nano Physics","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121091497","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: 4

Optical Bistability and Normal-Mode Splitting of Two-Species Bose-Einstein Condensates in An Optical Cavity 光学腔中两种玻色-爱因斯坦凝聚体的光学双稳性和正模分裂

Journal of Atomic, Molecular, Condensate and Nano Physics Pub Date : 2015-12-04 DOI: 10.26713/JAMCNP.V2I2.302

Neha Aggarwal, Shweta, A. Bhattacherjee, M. Mohan

引用次数: 0

Relativistic Many-body Calculations for Electric Dipole Moments in (^{129})Xe, (^{199})Hg, (^{223})Rn, (^{225})Ra and (^{171})Yb Atom (^{129}) Xe, (^{199}) Hg, (^{223}) Rn, (^{225}) Ra和(^{171}) Yb原子中电偶极矩的相对论多体计算

Journal of Atomic, Molecular, Condensate and Nano Physics Pub Date : 2015-12-04 DOI: 10.26713/JAMCNP.V2I2.333

Y. Singh, B. Sahoo

{"title":"Relativistic Many-body Calculations for Electric Dipole Moments in (^{129})Xe, (^{199})Hg, (^{223})Rn, (^{225})Ra and (^{171})Yb Atom","authors":"Y. Singh, B. Sahoo","doi":"10.26713/JAMCNP.V2I2.333","DOIUrl":"https://doi.org/10.26713/JAMCNP.V2I2.333","url":null,"abstract":"We present and compare the results of permanent electric dipole moments (EDMs) of various closed-shell atoms due to the nuclear Schiff moment (NSM) and the tensor-pseudotensor (T-PT) interactions between the atomic nuclei and electrons. In order to highlight the role of electron-correlation effects in obtaining accurate EDM results, we employ a number of relativistic many-body methods including coupled-cluster theory at different degrees of approximation. On combining our results obtained from the relativistic coupled-cluster (RCC) at the levels of singles and doubles excitations (CCSD method) with the available EDM measurements we obtain accurate bounds on the couplings (S) and (C_T) associated with the respective NSM and T-PT interactions. The most precise EDM measurement on (^{199})Hg in combination with our CC results yield limits on the above couplings as (S<1.45 times 10^{-12}|e|)fm(^3) and (C_T < 2.09 times 10^{-9}) respectively. Further combining these bounds with the latest nuclear structure and quantum chromodynamics calculations we infer limits on the strong CP-violating parameter and for the combined up- and down- quark chromo-EDMs as (|bar{theta}| < 1.1 times 10^{-9}) and (|widetilde{d}_u - widetilde{d}_d| < 2.8 times 10^{-26} |e|)cm, respectively.","PeriodicalId":239838,"journal":{"name":"Journal of Atomic, Molecular, Condensate and Nano Physics","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124519496","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

Ambient Conditioned, Solution Processed CuO Nanoflakes over Carbon Fabric for Supercapacitor Application: Performance Enhancement via Nanoparticle Attachment 环境条件下，溶液处理的CuO纳米薄片在碳织物上的超级电容器应用:通过纳米颗粒附着来增强性能

Journal of Atomic, Molecular, Condensate and Nano Physics Pub Date : 2015-12-04 DOI: 10.26713/JAMCNP.V2I2.274

S. Pal, S. Maiti, S. Dutta, K. Chattopadhyay

{"title":"Ambient Conditioned, Solution Processed CuO Nanoflakes over Carbon Fabric for Supercapacitor Application: Performance Enhancement via Nanoparticle Attachment","authors":"S. Pal, S. Maiti, S. Dutta, K. Chattopadhyay","doi":"10.26713/JAMCNP.V2I2.274","DOIUrl":"https://doi.org/10.26713/JAMCNP.V2I2.274","url":null,"abstract":"All Solid-state supercapacitors based on pure CuO nanoflakes and CuO@Au heterostructure over carbon cloth were fabricated where directly functioned nanostructure over carbon fiber acts as electrode and detour the necessity of any binder or ancillary materials. High coverage of CuO nanoflakes over entire cylindrical surface of each fiber provide decent electrochemical which nwas further uplifted after Au nanoparticle decoration. Registered electrochemical performance from CuO nanoflakes was found to be 11 F/g at current density 0.5A/g which significantly improved to 26 F/g at the same current density after nanoparticle attachment. Increase in surface area as well as increment of overall conductivity of the hybrid system due to Au nanoparticle attachment may accredit for such performance enrichment. All Solid-state supercapacitors based on pure CuO nanoflakes and CuO@Au heterostructure over carbon cloth were fabricated where directly functioned nanostructure over carbon fib eracts as electrode and detour the necessity of any binder or ancillary materials. High coverage of CuO nanoflakes over entire cylindrical surface of each fiber provide decent electrochemical which was further uplifted after Au nanoparticle decoration. Registered electrochemical performance from CuO nanoflakes was found to be 11 F/g at current density0.5A/g which significantly improved to 26 F/g at the same current density after nanoparticle attachment. Increase in surface area as well as increment of overall conductivity of the hybrid system due to Au nanoparticle attachment may accredit for such performance enrichment.","PeriodicalId":239838,"journal":{"name":"Journal of Atomic, Molecular, Condensate and Nano Physics","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127203660","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

Nanostructured Anatase Titania Thin Films Prepared by Sol-Gel Dip Coating Technique 溶胶-凝胶浸涂法制备纳米锐钛矿型二氧化钛薄膜

Journal of Atomic, Molecular, Condensate and Nano Physics Pub Date : 2015-12-04 DOI: 10.26713/JAMCNP.V2I2.331

Davoud Dastan

引用次数: 81

Lifetime Measurement of Highly Charged Ions Relevant to Astrophysics 与天体物理学相关的高电荷离子的寿命测量

Journal of Atomic, Molecular, Condensate and Nano Physics Pub Date : 2015-12-04 DOI: 10.26713/JAMCNP.V2I2.334

R. K. Karn, C. N. Mishra, N. Ahmad, C. Safvan, T. Nandi

引用次数: 1

Modification of ZnO Nanowires Induced by Ion Irradiation for Device Applications 离子辐照修饰ZnO纳米线在器件中的应用

Journal of Atomic, Molecular, Condensate and Nano Physics Pub Date : 2015-12-04 DOI: 10.26713/JAMCNP.V2I2.322

S. Dhal, A. K. Behera, S. Chatterjee

引用次数: 1

Comparison of Electromagnetically Induced Transparency (EIT) Spectra for Six-level Lambda (Lambda) and Five-level V-type Systems 六能级Lambda (Lambda)与五能级v型系统的电致透明光谱比较

Journal of Atomic, Molecular, Condensate and Nano Physics Pub Date : 2015-11-30 DOI: 10.26713/JAMCNP.V2I2.323

Dipankar Bhattacharyya, A. Ghosh, A. Bandyopadhyay, S. Saha, S. De

{"title":"Comparison of Electromagnetically Induced Transparency (EIT) Spectra for Six-level Lambda (Lambda) and Five-level V-type Systems","authors":"Dipankar Bhattacharyya, A. Ghosh, A. Bandyopadhyay, S. Saha, S. De","doi":"10.26713/JAMCNP.V2I2.323","DOIUrl":"https://doi.org/10.26713/JAMCNP.V2I2.323","url":null,"abstract":"Electromagnetically induced transparency (EIT) is experimentally studied in a rubidium vapour cell (without buffer gas, both (^{87})Rb and (^{85})Rb present according to their natural abundance) kept within two-layers of (mu(mu))-metal shields to avoid the effect of Earth's magnetic field on the energy levels of atomic rubidium. An external cavity diode laser (ECDL), used as a low power probe laser, is locked to the hyperfine cross-over peak of (F = 2 rightarrow F' = 2, 3) transitions of (^{87})Rb. The frequency of another ECDL, the pump laser, is set to scan the (F=1 rightarrow F' = 0, 1, 2) transitions of (^{87})Rb. These form the (Lambda)-type six level system. In the V-type system, both the pump and the probe lasers share the same (F = 2) ground level. The probe beam coming out of the cell is detected by a low noise fast photodetector. The resulting spectra show signature of EIT in the \"peak\" for the (Lambda)-type system and in the \"dip\" for the V-type system. Numerical calculation based simulated spectra are also compared with the experimental spectra. In both the cases very narrow EIT linewidth ((Gamma_{t} < Gamma)) is observed even at high value of pump Rabi-frequency ((Omega_{c}gg Gamma)). Narrower value of EIT linewidth is due to Doppler averaging phenomena.","PeriodicalId":239838,"journal":{"name":"Journal of Atomic, Molecular, Condensate and Nano Physics","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125030444","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: 1

Effect of Debye Plasma on Hydrogenic Photoionization Cross Section 德拜等离子体对氢光电离截面的影响

Journal of Atomic, Molecular, Condensate and Nano Physics Pub Date : 2015-11-30 DOI: 10.26713/jamcnp.v2i2.321

M. Das, N. K. Gupta

{"title":"Effect of Debye Plasma on Hydrogenic Photoionization Cross Section","authors":"M. Das, N. K. Gupta","doi":"10.26713/jamcnp.v2i2.321","DOIUrl":"https://doi.org/10.26713/jamcnp.v2i2.321","url":null,"abstract":"In this work, we have studied the effect of plasma screening on the ground and excited state photoionization cross section ((sigma)) of hydrogenic system. We have considered weakly coupled plasma where the screening of nuclear charge by plasma free electrons is represented by Debye-Huckel potential. Using this potential, radial Schrodinger equation is solved numerically to obtain the bound and free state wave functions, and transition matrix elements. Adaptive step size controlled Runge-Kutta method is used for numerical integration. Use of adaptive method for grid generation ensures lesser computational time as compared to uniform grid system. Using the methodology, we have computed photoionization cross section from (1s) ground state and excited (2p) state of hydrogenic system. Strong enhancements in (sigma) are observed which are generally termed as shape resonances. It is noted that these resonances occur for specific screening values where bound states are pressure ionized to enter the quasi-bound regime. The changes in the phase and amplitude of continuum wave functions also lead to appearance of Cooper minimum in (sigma) of excited (2s) state. We have compared the results with existing theoretical and experimental data wherever they are available.","PeriodicalId":239838,"journal":{"name":"Journal of Atomic, Molecular, Condensate and Nano Physics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116278486","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: 1