Results 221 to 230 of about 4,797 (280)

A Low‐Power Radioisotope XRF Spectrometer for Detection of Light Elements on Planetary Missions

X-Ray Spectrometry, EarlyView.
ABSTRACT Current X‐ray spectrometers for in situ geochemical analysis on planetary missions typically rely either on X‐ray tubes, which demand electrical power and add mass and thermal complexity, or on alpha particle X‐ray spectrometers (APXS) that use rare 244Cm$$ {}^{244}\mathrm{Cm} $$ sources, and come with severe concerns on radiation safety and ...
Leandro Silveri, Artem Knyazev, Hashem Alaidaros, Maryam Manzoor Amanullah, Zach Ioannou, Tengiz Ibrayev, Danish Khan, Sara Leardini, Laura Manenti, Simi Maria Emilia Mangani, Safa Naseem, Sandhya Sharma, Sara Trevisan, Alia Zino, Francesco Arneodo   +14 more
wiley   +1 more source

Compensation Method Based on Phase Shift Between Pins of Crystal Resonator. [PDF]

Sensors (Basel)
Li Z, Peng J, Miao M, Wang Z.
europepmc   +1 more source

Multielemental Analysis in Rice Grains by Total Reflection X‐Ray Fluorescence

X-Ray Spectrometry, EarlyView.
ABSTRACT Rice (Oryza sativa) is a staple food cultivated worldwide and represents a significant source of essential nutrients for humans. However, this cereal may also contain potentially toxic elements including chromium, arsenic, and lead typically present at trace concentrations (ng.g−1).
F. T. S. Tsuyama, R. G. Leitão, C. G. L. Canellas, G. C. Ferreira, J. L. Pereira, R. S. Santos, J. T. Assis, D. F. Oliveira, M. J. Anjos   +8 more
wiley   +1 more source

Quantum sensing of acceleration and rotation by interfering magnetically launched atoms. [PDF]

Sci Adv
Salducci C, Bidel Y, Cadoret M, Darmon S, Zahzam N, Bonnin A, Schwartz S, Blanchard C, Bresson A.   +8 more
europepmc   +1 more source

Rb4CuSb2X12 (X = Cl, Br) as Novel Vacancy‐Ordered Quadruple Perovskites

Zeitschrift für anorganische und allgemeine Chemie, EarlyView.
The vacancy‐ordered quadruple perovskites Rb4CuSb2X12 (X = Cl, Br) were crystallized from hydrohalic acid. Their crystal structures can be interpreted as new distortion variants of the perovskite structure with ordered vacancies. The electronic structure of Rb4CuSb2Br12 shows that the Br and Sb states form the valence band and the upper conduction band.
Mirko Bravic, Markus Otteny, Kevin Eble, Julian Gebhardt, Christian Elsässer, Michael Daub   +5 more
wiley   +1 more source

Dual wavelength Brillouin laser terahertz source stabilized to carbonyl sulfide rotational transition. [PDF]

Nat Commun
Greenberg J, Heffernan BM, McGrew WF, Nose K, Rolland A.   +4 more
europepmc   +1 more source

Evaluation methods of BDS-3 ground-segment defensive capability oriented to satellite navigation countermeasures. [PDF]

Heliyon
Wang Y, Sun F, Wang X, Gao S.
europepmc   +1 more source

A fault-tolerant neutral-atom architecture for universal quantum computation. [PDF]

Nature
Bluvstein D, Geim AA, Li SH, Evered SJ, Bonilla Ataides JP, Baranes G, Gu A, Manovitz T, Xu M, Kalinowski M, Majidy S, Kokail C, Maskara N, Trapp EC, Stewart LM, Hollerith S, Zhou H, Gullans MJ, Yelin SF, Greiner M, Vuletić V, Cain M, Lukin MD.   +22 more
europepmc   +1 more source

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Digital lock-in amplifier for space rubidium atomic clock

Review of Scientific Instruments, 2021
In many low-noise applications, extracting information from the extremely noisy signal is required. This task can be accomplished by a lock-in amplifier if the frequency of the signal is known before detection. Error signal output from the physics package of the rubidium atomic clock (RbAC) is one of those noisy signals.
Pratik Jain, Priyanka Priya, T. V. S. Ram, K. S. Parikh, Thejesh N. Bandi   +4 more
openaire   +2 more sources

Rubidium atomic clock with drift compensation

CPEM 2010, 2010
This paper shows the results of an automatic system that compensates drifts of rubidium atomic clocks, comparing to GPS. This leads to high stability in large time and low noise in short time.
Leonardo Trigo, Daniel Slomovitz
openaire   +1 more source