The investigation of beta-delayed proton decay mode has become a powerful probe to study the proton-rich nuclei and their nuc/eax structure. To study exotic nuclei with extremely low purity produced by the Radioactive...The investigation of beta-delayed proton decay mode has become a powerful probe to study the proton-rich nuclei and their nuc/eax structure. To study exotic nuclei with extremely low purity produced by the Radioactive Ion Beam Line in Lanzhou, we perform an experiment of beta-delayed proton emission of 36,37^Ca under a high-intensity continuous-beam mode. Ions are implanted into a double-sided silicon strip detector, where the subsequent decays are correlated to the preceding implantations in time sequence. The energy spectra of delayed protons from 36,37^Caβ decay, half-lives and decay branching ratios axe measured. The experimental results confirm the previous literature data and some improved results are obtained as well, demonstrating the feasibility of our detection approach and the reliability of our data analysis procedure. This allows for the development of more powerful detection arrays and further research on nuclei closer to proton-drip line on the basis of present work.展开更多
Disorder of consciousness （DOC） is one of the most serious sequelae of brain injury, and is challenging for neurologists and rehabilitation special- ists to manage because of its refractory nature （Whyte et al., 2...Disorder of consciousness （DOC） is one of the most serious sequelae of brain injury, and is challenging for neurologists and rehabilitation special- ists to manage because of its refractory nature （Whyte et al., 2013）. Acu- puncture is a traditional Chinese medicine technique that is often used to help improve the level of consciousness in patients with DOC. However, the responses to stimulation of acupoints in patients with DOC are not fully understood.展开更多
Acoustic Barkhausen Emission (ABE) and Electromagnetic Barkhausen Emission (EBE) have been measured. Explanations of the response of nickel to an applied magnetic field are considered using energy density diagrams and...Acoustic Barkhausen Emission (ABE) and Electromagnetic Barkhausen Emission (EBE) have been measured. Explanations of the response of nickel to an applied magnetic field are considered using energy density diagrams and critical fields deduced using Kersten's modified theory. These theoretical models are correlated with ABE and EBE measurements, providing further confirmation of the origins of ABE being non-180° domain wall motion. This paper also shows that the motion of domain walls, on increasing the magnetising fields from saturation to satu -ration, follows the sequence of 71°-180° - 109°. Values of critical fields correponding to 71°, 180° and 109° wall motions in nickel are determined using these techniques .展开更多
基金Supported by the National Basic Research Program of China under Grant No 2013CB834404the National Natural Science Foundation of China under Grant Nos 11375268,11475263,U1432246 and U1432127
文摘The investigation of beta-delayed proton decay mode has become a powerful probe to study the proton-rich nuclei and their nuc/eax structure. To study exotic nuclei with extremely low purity produced by the Radioactive Ion Beam Line in Lanzhou, we perform an experiment of beta-delayed proton emission of 36,37^Ca under a high-intensity continuous-beam mode. Ions are implanted into a double-sided silicon strip detector, where the subsequent decays are correlated to the preceding implantations in time sequence. The energy spectra of delayed protons from 36,37^Caβ decay, half-lives and decay branching ratios axe measured. The experimental results confirm the previous literature data and some improved results are obtained as well, demonstrating the feasibility of our detection approach and the reliability of our data analysis procedure. This allows for the development of more powerful detection arrays and further research on nuclei closer to proton-drip line on the basis of present work.
基金supported by the National Natural Science Foundation of China,No.81171852
文摘Disorder of consciousness （DOC） is one of the most serious sequelae of brain injury, and is challenging for neurologists and rehabilitation special- ists to manage because of its refractory nature （Whyte et al., 2013）. Acu- puncture is a traditional Chinese medicine technique that is often used to help improve the level of consciousness in patients with DOC. However, the responses to stimulation of acupoints in patients with DOC are not fully understood.
文摘Acoustic Barkhausen Emission (ABE) and Electromagnetic Barkhausen Emission (EBE) have been measured. Explanations of the response of nickel to an applied magnetic field are considered using energy density diagrams and critical fields deduced using Kersten's modified theory. These theoretical models are correlated with ABE and EBE measurements, providing further confirmation of the origins of ABE being non-180° domain wall motion. This paper also shows that the motion of domain walls, on increasing the magnetising fields from saturation to satu -ration, follows the sequence of 71°-180° - 109°. Values of critical fields correponding to 71°, 180° and 109° wall motions in nickel are determined using these techniques .
