In order to explore the J^(π)=1+;T=1 states in ^(40)Ca between 11.0 and 12.0MeV,which have been predicted recently,the measurements of the ^(39)K(p,γ)^(40)Ca reaction have been taken.Nine resonances appeared in the ...In order to explore the J^(π)=1+;T=1 states in ^(40)Ca between 11.0 and 12.0MeV,which have been predicted recently,the measurements of the ^(39)K(p,γ)^(40)Ca reaction have been taken.Nine resonances appeared in the region E_(p)=2.7-3.8MeV,and six of them corresponding to E_(p)=2749,3085,3135,3202,3417 and 3708ke were observed for the first time with the(p,γ)reaction.The spin,parity and isospin of the 11.08SMeV state in ^(40)Ca are determined to be J^(π)=1^(+);T=1.The M1 transition strength B(M1)↑of this state from the ground state is 0.24μ_(0)^(2).The result is qualitatively in agreement with the the oretical prediction.展开更多
The MeV proton non- Rutherford elastic backscattering (PEBS) has been used to measure a variety of low Z element- containing samples including thick SiC film, N implanted stainless steel, thin films interface (Ag on C...The MeV proton non- Rutherford elastic backscattering (PEBS) has been used to measure a variety of low Z element- containing samples including thick SiC film, N implanted stainless steel, thin films interface (Ag on Cu) and very deep (4μ m) SOI structure by high energy oxygen implantation. It is demonstrated that by using the significant enhancement of cross sections for low Z elements and selecting the proper energy region of the excitation curves both the sensitivities for detecting low Z elements and the accessible depth of the PEBS technique are remarkablely improved over the ordinary RBS method. The disadvantages of the PEBS as compared with RBS as well as high energy He elastic backscattering (HeEBS) are also discussed.展开更多
文摘In order to explore the J^(π)=1+;T=1 states in ^(40)Ca between 11.0 and 12.0MeV,which have been predicted recently,the measurements of the ^(39)K(p,γ)^(40)Ca reaction have been taken.Nine resonances appeared in the region E_(p)=2.7-3.8MeV,and six of them corresponding to E_(p)=2749,3085,3135,3202,3417 and 3708ke were observed for the first time with the(p,γ)reaction.The spin,parity and isospin of the 11.08SMeV state in ^(40)Ca are determined to be J^(π)=1^(+);T=1.The M1 transition strength B(M1)↑of this state from the ground state is 0.24μ_(0)^(2).The result is qualitatively in agreement with the the oretical prediction.
文摘The MeV proton non- Rutherford elastic backscattering (PEBS) has been used to measure a variety of low Z element- containing samples including thick SiC film, N implanted stainless steel, thin films interface (Ag on Cu) and very deep (4μ m) SOI structure by high energy oxygen implantation. It is demonstrated that by using the significant enhancement of cross sections for low Z elements and selecting the proper energy region of the excitation curves both the sensitivities for detecting low Z elements and the accessible depth of the PEBS technique are remarkablely improved over the ordinary RBS method. The disadvantages of the PEBS as compared with RBS as well as high energy He elastic backscattering (HeEBS) are also discussed.
