Results 1 to 10 of about 259,191 (246)

Singlet/Triplet State Anti/Aromaticity of CyclopentadienylCation: Sensitivity to Substituent Effect

Chemistry, 2021
It is well known that singlet state aromaticity is quite insensitive to substituent effects, in the case of monosubstitution. In this work, we use density functional theory (DFT) calculations to examine the sensitivity of triplet state aromaticity to ...
Milovan Stojanović, Jovana Aleksić, Marija Baranac-Stojanović   +2 more
doaj   +3 more sources

Two-photon pathway to ultracold ground state molecules of 23Na40K

New Journal of Physics, 2015
We report on high-resolution spectroscopy of ultracold fermionic ^23 Na ^40 K Feshbach molecules, and identify a two-photon pathway to the rovibrational singlet ground state via a resonantly mixed B ^1 Π ∼ c ^3 Σ ^+ intermediate state.
Jee Woo Park, Sebastian A Will, Martin W Zwierlein   +2 more
doaj   +2 more sources

Zhang-Rice singlets state formed by two-step oxidation for triggering water oxidation under operando conditions

Nature Communications, 2023
The Zhang-Rice singlet is known for the superconductivity of high-temperature superconductors cuprate but is rarely studied for an electrochemical catalyst.
Chun-Kuo Peng, Yu-Chang Lin, Chao‐Lung Chiang, Zhengxin Qian, Yu-Cheng Huang, Chung-Li Dong, Jian‐Feng Li, Chien-Te Chen, Zhiwei Hu, San-Yuan Chen, Yan-Gu Lin   +10 more
doaj   +2 more sources

Composite pulses for high fidelity population transfer in three-level systems

New Journal of Physics, 2022
In this work, we propose a composite pulses (CPs) scheme by modulating phases to achieve high fidelity population transfer in three-level systems. To circumvent the obstacle that not enough variables are exploited to eliminate the systematic errors in ...
Zhi-Cheng Shi, Cheng Zhang, Du Ran, Yan Xia, Reuven Ianconescu, Aharon Friedman, X X Yi, Shi-Biao Zheng   +7 more
doaj   +1 more source

Preparing Nuclear Spin Singlet State in a Three-spin System and Its Application in 2D Spectrum

Chinese Journal of Magnetic Resonance, 2022
Nuclear spin singlet state is a special spin state, whose main characteristic is that its lift-time can be much longer than the corresponding longitudinal/transverse relaxation time.
Kai-rui HU, Xue YANG, Zhi-ming HUANG, Jia-xiang XIN, Da-xiu WEI, Ye-feng YAO   +5 more
doaj   +1 more source

Preparation and Lifetime Studies of the Singlet State of Five Spins in Hexene Molecules Used to Guide the Preservation of the Parahydrogen-induced Nuclear Polarization State

Chinese Journal of Magnetic Resonance, 2023
Parahydrogen-induced polarization (PHIP) technique can greatly enhance the sensitivity of nuclear magnetic resonance (NMR) signals, and has been applied in the fields of magnetic resonance imaging, in situ chemical reaction monitoring, etc.
CI Jie, YANG Xue, XIN Jiaxiang, WEI Daxiu, YAO Yefeng   +4 more
doaj   +1 more source

Isospin eigenstates of the color singlet-singlet-type pentaquark states

Science China Physics, Mechanics & Astronomy, 2022
In this article, we construct the color singlet-singlet type five-quark currents with the isospins $(I,I_3)=(\frac{1}{2},\frac{1}{2})$ and $(\frac{3}{2},\frac{1}{2})$ unambiguously to explore the $\bar{D}Σ_c$, $\bar{D}Σ_c^*$, $\bar{D}^*Σ_c$ and $\bar{D}^*Σ_c^*$ pentaquark states via the QCD sum rules for the first time, where the $\bar{D}$, $Σ_c ...
Wang, Xiu-Wu, Wang, Zhi-Gang, Yu, Guo-Liang, Xin, Qi   +3 more
openaire   +2 more sources

Extending the Scope of Singlet‐State Spectroscopy [PDF]

ChemPhysChem, 2007
AbstractDifferent decoupling sequences are tested—using various shaped radio‐frequency (RF) pulses—to achieve the longest possible lifetimes of singlet‐state populations over the widest possible bandwidths, that is, ranges of offsets and relative chemical shifts of the nuclei involved in the singlet states.
Sarkar, Riddhiman, Ahuja, Puneet, Moskau, Detlef, Vasos, Paul R, Bodenhausen, Geoffrey   +4 more
openaire   +4 more sources

Laser excitation of the 1s-hyperfine transition in muonic hydrogen

SciPost Physics, 2022
The CREMA collaboration is pursuing a measurement of the ground-state hyperfine splitting (HFS) in muonic hydrogen ($\mu$p) with 1 ppm accuracy by means of pulsed laser spectroscopy to determine the two-photon-exchange contribution with $2\times10^{-4}
P. Amaro, A. Adamczak, M. Abdou Ahmed, L. Affolter, F. D. Amaro, P. Carvalho, T. -L. Chen, L. M. P. Fernandes, M. Ferro, D. Goeldi, T. Graf, M. Guerra, T. W. Hänsch, C. A. O. Henriques, Y. -C. Huang, P. Indelicato, O. Kara, K. Kirch, A. Knecht, F. Kottmann, Y. -W. Liu, J. Machado, M. Marszalek, R. D. P. Mano, C. M. B. Monteiro, F. Nez, J. Nuber, A. Ouf, N. Paul, R. Pohl, E. Rapisarda, J. M. F. dos Santos, J. P. Santos, P. A. O. C. Silva, L. Sinkunaite, J. -T. Shy, K. Schuhmann, S. Rajamohanan, A. Soter, L. Sustelo, D. Taqqu, L. -B. Wang, F. Wauters, P. Yzombard, M. Zeyen, A. Antognini
doaj   +1 more source

Singlet fission initiating triplet generations of BODIPY derivatives through $$\pi $$ π -stacking: a theoretical study

Scientific Reports, 2022
The role of singlet fission (SF) in the triplet-state generation mechanism of 1,3,5,7-tetramethyl-boron-dipyrromethene derivatives is revealed by exploring the cause for the solvent dependence of the generation rate.
Takao Tsuneda, Tetsuya Taketsugu
doaj   +1 more source