2004年12月15日 · In this study, we explore the influence of the glass surface state on the local structure of network modifiers (Na) and formers (Al and Si) to determine the optimal conditions for collecting reliable XANES spectra at Na-, Al-, and Si K-edges in oxide glasses.

2004年10月1日 · Na K-edge X ray absorption near-edge structure (XANES) spectra for minerals and glasses were collected using synchrotron radiation. Na-K XANES is a good structural probe to determine the...

2023年10月9日 · Na K edge x-ray absorption near edge structure (XANES) provides insights into electronic transitions and the local atomic environment of sodium atoms in Na 2 He.

2015年6月15日 · Na-边. -射线近边结构 (ANS) 谱研究了含. Na. 玻璃 (Na2O-SiO2-P2O5. 和. Na2O-SiO2) 的. Na-边的特征, 同时建立了含磷 (P) 的钠玻璃中. Na-边的能量, 其能量位置随着. P. 的含量增. 加, 而增大其能量位置 CaSi2O6(Di)-NaAlSi3O8(Ab) 玻璃中. -边 ANS. 的能量和 O. 的键长. 有关系. . 在. Di-Ab

The structural role of Na in Na2-O-SiO2 and Na2O-SiO2-P2O5 glasses was studied using Na K-edge XANES (X-ray near edge structure) spectra. The Na K-edge XANES shows little change with increase in the content of Na2O in Na2O-SiO2 glasses.

2004年9月1日 · Na K-edge X ray absorption near-edge structure (XANES) spectra for minerals and glasses were collected using synchrotron radiation. Na-K XANES is a good structural probe to determine the coordination state of this element in important minerals and glasses.

2004年12月15日 · In this study, we explore the influence of the glass surface state on the local structure of network modifiers (Na) and formers (Al and Si) to determine the optimal conditions for collecting reliable XANES spectra at Na-, Al-, and Si K-edges in oxide glasses.

First-principles calculations indicated that a direct bandgap of 0.88 eV formed in 5.55% Na-doped antimonene, while undoped antimonene had an indirect bandgap of 2.38 eV.

Na K-edge X ray absorption near-edge structure (XANES) spectra for minerals and glasses were collected using synchrotron radiation. Na-K XANES is a good structural probe to determine the coordination state of this element in important minerals and glasses.

The optical properties for Na2He were studied and its application towards optoelectronic devices has been identied. Also, Na K edge x-ray absorption near edge structure (XANES) for Na 2 He

Na K edge x-ray absorption near edge structure (XANES) provides insights into electronic transitions and the local atomic environment of sodium atoms in Na 2 He. By measuring the X-ray absorption at various energies near the Na K edge, the technique can reveal details about the oxidation state, coordination number, and bonding characteristics ...

1993年1月1日 · Na K-edge XAFS of Na2O/Al2O3 catalysts (4-32 wt% Na) was examined. It was deduced on the basis of XANES of sodium halides that the ionicity of an Na-O bond in catalyst sample relates to the...

2002年4月15日 · X-ray absorption near edge structure (XANES) spectra at the sodium K-edge and chlorine L-edge of Na 4 Cl 4 clusters have been studied. A theoretical ab initio analysis of XANES, based on full multiple scattering theory, is compared to experiment.

Na K-edge X ray absorption near-edge structure (XANES) spectra for minerals and glasses were collected using synchrotron radiation. Na-K XANES is a good structural probe to determine the coordination state of this element in important minerals and glasses.

1993年1月1日 · Na K-edge XAFS of Na 2 O/Al 2 O 3 catalysts (4-32 wt% Na) was examined. It was deduced on the basis of XANES of sodium halides that the ionicity of an Na-O bond in catalyst sample relates to the energy position of the prominent peak at Na K-edge, which is consistent with the catalytic performance.

2001年7月15日 · Photoabsorption spectra of free and deposited NaCl clusters at the Na K-edge are presented. The absorption spectra were recorded using the yield of photoelectrons and cluster ions. Above the K-shell ionization limit, multi-scattering-type oscillations could be identified which allow the determination of bond length in the cluster.

2023年10月9日 · From our results, the GGA and LDA predict the material to be semiconductor, while mBJ predicts the material to be insulator. The calculated results from the electronic structure show that Na2He is...

Na K-edge XAFS measurements of NaCl aqueous solutions Toyonari Yaji, Koji Nakanishi, and Toshiaki Ohta SR Center, Research Organization of Science and Technology, Ritsumeikan University, 1-1-1, Noji-Higashi, Kusatsu, 525-8577 Japan We have developed electrochemical cells for in situ soft X-ray XAFS measurements of second battery

2005年1月1日 · Sodium K edge XANES calculations were performed for sodium halides, using the last version of the ab-initio FEFF code, and compared with the experimental data. Several FEFF parameters were varied during calculations, aiming to investigate their influence on the theoretical results.

2023年1月16日 · Here, the authors demonstrate the extraordinary stable confinement of NaK alloy at room temperature by constructing a super-wetting substrate, which is based on highly dispersed cobalt-single-atom carbon nanoarrays.