8.
已知公差不为\(0\)的等差数列\(\{\)\(a\)\({\,\!}_{n}\}\),等比数列\(\{b_{n}\}\)满足:\(a\)\({\,\!}_{1}=b_{1}=1\),\(a\)\({\,\!}_{2}=b_{2}\),\(2\)\(a\)\({\,\!}_{3}—b_{3}=1\).
\((1)\)求数列\(\{\)\(a\)\({\,\!}_{n}\}\),\(\{b_{n}\}\)的通项公式;
\((2)\)设数列\(\left\{\log _{3}^{{b}_{n}}\right\} \) 的前项和为\({{S}_{n}}\),求\({{S}_{n}}\) .