TY - JOUR
T1 - Versatile production method of thin targets supported by PVA
AU - Shimbara, Y.
AU - Fujita, Y.
AU - Hamaguchi, M.
AU - Mochizuki, E.
AU - Adachi, T.
AU - Berg, G. P.A.
AU - Fujimura, H.
AU - Fujita, H.
AU - Fujita, K.
AU - Hara, K.
AU - Hatanaka, K.
AU - Kamiya, J.
AU - Kawase, K.
AU - Kawabata, T.
AU - Kitamura, Y.
AU - Nakanishi, K.
AU - Sakamoto, N.
AU - Sakemi, Y.
AU - Shimizu, Y.
AU - Tameshige, Y.
AU - Uchida, M.
AU - Wakasa, T.
AU - Yamasaki, K.
AU - Yoshifuku, M.
AU - Yosoi, M.
PY - 2004/4/21
Y1 - 2004/4/21
N2 - Thin self-supporting targets are indispensable in high energy-resolution studies using a magnetic spectrometer. However, nuclear targets of alkaline and alkaline-earth metal or halogen isotopes are not easily available. In order to produce thin target foils of these elements for the use in charge-exchange reactions, we take advantage of the fact that the stable isotopes of these elements have relatively small negative Q values, while 12C and 16O have large negative Q values. Therefore, even if organic compounds containing carbon and oxygen are used as supporting material, clean spectra on alkaline and alkaline-earth metal or halogen targets can be obtained up to the excitation energies of Q-value differences. A technique to produce thin foils of the chemical compounds Na2CO3,K 2CO3,CaCO3 and CaCl2 was developed using polyvinylalcohol as supporting material. Foils with a total thickness of 1-2 mg/cm2 were produced and used as targets in a (3He,t) reaction study at an incident energy of 420 MeV. Owing to the small contributions of energy-loss differences of beam and reaction products in such thin targets, a very good resolution of ΔE/E=7×10-5 was achieved in combination with a high-resolution magnetic spectrometer.
AB - Thin self-supporting targets are indispensable in high energy-resolution studies using a magnetic spectrometer. However, nuclear targets of alkaline and alkaline-earth metal or halogen isotopes are not easily available. In order to produce thin target foils of these elements for the use in charge-exchange reactions, we take advantage of the fact that the stable isotopes of these elements have relatively small negative Q values, while 12C and 16O have large negative Q values. Therefore, even if organic compounds containing carbon and oxygen are used as supporting material, clean spectra on alkaline and alkaline-earth metal or halogen targets can be obtained up to the excitation energies of Q-value differences. A technique to produce thin foils of the chemical compounds Na2CO3,K 2CO3,CaCO3 and CaCl2 was developed using polyvinylalcohol as supporting material. Foils with a total thickness of 1-2 mg/cm2 were produced and used as targets in a (3He,t) reaction study at an incident energy of 420 MeV. Owing to the small contributions of energy-loss differences of beam and reaction products in such thin targets, a very good resolution of ΔE/E=7×10-5 was achieved in combination with a high-resolution magnetic spectrometer.
KW - Alkaline metal target
KW - Charge-exchange reaction
KW - Halogen target
KW - Reaction Q value
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U2 - 10.1016/j.nima.2003.12.002
DO - 10.1016/j.nima.2003.12.002
M3 - Article
AN - SCOPUS:11144355307
VL - 522
SP - 205
EP - 211
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
SN - 0168-9002
IS - 3
ER -