A high-profile event in 2024 for the science community and the public as well,the Chang’e-6(CE-6)mission repeatedly hit headlines from March to June 2024.First in March 2024,the launching of the Queqiao-2,a relay sat...A high-profile event in 2024 for the science community and the public as well,the Chang’e-6(CE-6)mission repeatedly hit headlines from March to June 2024.First in March 2024,the launching of the Queqiao-2,a relay satellite for communication support necessary for farside tasks,heralded the journey.On June 2,2024,the lander-ascender complex of CE-6 successfully touched down in the South Pole-Aitken(SPA)basin on the lunar farside to scoop,drill and collect samples;later,on June 25,2024,the CE-6 returner brought the 1,935.3 grams of samples home safe and sound.For the first time ever,human beings obtained samples from the lunar farside,marking a significant milestone in lunar exploration.展开更多
On the Moon,tectonic structures are concentrated on the nearside,spatially associated with the maria(e.g.,Watters and Johnson,2010),or basalt-filled impact structures.Lunar graben(or rilles)are long,narrow troughs up to
On March 27,the National Natural Science Foundation of China(NSFC)released the annual“Top 10 Science Advances of China”for the year 2024.Topping the list was a research that revealed volcanic activities occurring ab...On March 27,the National Natural Science Foundation of China(NSFC)released the annual“Top 10 Science Advances of China”for the year 2024.Topping the list was a research that revealed volcanic activities occurring about 2.8 billion years ago on the far side of the Moon,based on samples returned by the Chang’e-6(CE-6)mission,the first successful effort to bring back samples from the lunar farside.展开更多
INTRODUCTION The Chang'e-6 mission recently returned the first sample from the lunar farside. The sampling site was located on a flat basaltic maria that was emplaced at ~2.8 Ga in the Apollo Basin(Zhang Q W L et ...INTRODUCTION The Chang'e-6 mission recently returned the first sample from the lunar farside. The sampling site was located on a flat basaltic maria that was emplaced at ~2.8 Ga in the Apollo Basin(Zhang Q W L et al., 2025;Cui et al., 2024), which formed in the northeastern portion of the South Pole-Aitken(SPA) Basin.展开更多
The optical potential ambiguity is a long-standing problem in the analysis of elastic scattering data.For a specific collid-ing system,ambiguous potential families can lead to different behaviors in the nearside and f...The optical potential ambiguity is a long-standing problem in the analysis of elastic scattering data.For a specific collid-ing system,ambiguous potential families can lead to different behaviors in the nearside and farside scattering components.By contrast,the envelope method can decompose the experimental data into two components with negative and positive deflection angles,respectively.Hence,a question arises as to whether the comparison between the calculated nearside(or farside)component and the derived positive-deflection-angle(or negative-deflection-angle)component can help analyze the potential ambiguity problem.In this study,we conducted a trial application of the envelope method to the potential ambiguity problem.The envelope method was improved by including uncertainties in the experimental data.The colliding systems of 16O+28Si at 215.2 MeV and 12C+12C at 1016 MeV were considered in the analyses.For each colliding system,the angular distribution experimental data were described nearly equally well by two potential sets,one of which is“surface transpar-ent”and the other is refractive.The calculated angular distributions were decomposed into nearside and farside scattering components.Using the improved envelope method,the experimental data were decomposed into the positive-deflection-angle and negative-deflection-angle components,which were then compared with the calculated nearside and farside components.The capability of the envelope method to analyze the potential ambiguities was also discussed.展开更多
文摘A high-profile event in 2024 for the science community and the public as well,the Chang’e-6(CE-6)mission repeatedly hit headlines from March to June 2024.First in March 2024,the launching of the Queqiao-2,a relay satellite for communication support necessary for farside tasks,heralded the journey.On June 2,2024,the lander-ascender complex of CE-6 successfully touched down in the South Pole-Aitken(SPA)basin on the lunar farside to scoop,drill and collect samples;later,on June 25,2024,the CE-6 returner brought the 1,935.3 grams of samples home safe and sound.For the first time ever,human beings obtained samples from the lunar farside,marking a significant milestone in lunar exploration.
基金supported by the Alexander von Humboldt Stiftung/Foundation
文摘On the Moon,tectonic structures are concentrated on the nearside,spatially associated with the maria(e.g.,Watters and Johnson,2010),or basalt-filled impact structures.Lunar graben(or rilles)are long,narrow troughs up to
文摘On March 27,the National Natural Science Foundation of China(NSFC)released the annual“Top 10 Science Advances of China”for the year 2024.Topping the list was a research that revealed volcanic activities occurring about 2.8 billion years ago on the far side of the Moon,based on samples returned by the Chang’e-6(CE-6)mission,the first successful effort to bring back samples from the lunar farside.
基金supported by the Natural Science Foundation of China (Nos. 42241108, 42273040, 42473049, 42203047)the Guangdong Basic and Applied Basic Research Foundation (No. 2024A1515011311)。
文摘INTRODUCTION The Chang'e-6 mission recently returned the first sample from the lunar farside. The sampling site was located on a flat basaltic maria that was emplaced at ~2.8 Ga in the Apollo Basin(Zhang Q W L et al., 2025;Cui et al., 2024), which formed in the northeastern portion of the South Pole-Aitken(SPA) Basin.
基金This work was supported by the National Natural Science Foundation of China(Nos.12005047 and U1832105).
文摘The optical potential ambiguity is a long-standing problem in the analysis of elastic scattering data.For a specific collid-ing system,ambiguous potential families can lead to different behaviors in the nearside and farside scattering components.By contrast,the envelope method can decompose the experimental data into two components with negative and positive deflection angles,respectively.Hence,a question arises as to whether the comparison between the calculated nearside(or farside)component and the derived positive-deflection-angle(or negative-deflection-angle)component can help analyze the potential ambiguity problem.In this study,we conducted a trial application of the envelope method to the potential ambiguity problem.The envelope method was improved by including uncertainties in the experimental data.The colliding systems of 16O+28Si at 215.2 MeV and 12C+12C at 1016 MeV were considered in the analyses.For each colliding system,the angular distribution experimental data were described nearly equally well by two potential sets,one of which is“surface transpar-ent”and the other is refractive.The calculated angular distributions were decomposed into nearside and farside scattering components.Using the improved envelope method,the experimental data were decomposed into the positive-deflection-angle and negative-deflection-angle components,which were then compared with the calculated nearside and farside components.The capability of the envelope method to analyze the potential ambiguities was also discussed.
