  Single particle transverse mass spectra and HBT radii of identical pion and
identical kaon are analyzed with a blast-wave parametrization under the
assumptions local thermal equilibrium and transverse expansion. Under the
assumptions, temperature parameter $T$ and transverse expansion rapidity $\rho$
are sensitive to the shapes of transverse mass $m_\text T$ spectrum and HBT
radius $R_\text{s}(K_\text T)$. Negative and positive correlations between $T$
and $\rho$ are observed by fitting $m_\text{T}$ spectrum and HBT radius
$R_\text s (K_\text T)$, respectively. For a Monte Carlo simulation using the
blast-wave function, $T$ and $\rho$ are extracted by fitting $m_T$ spectra and
HBT radii together utilizing a combined optimization function $\chi^2$. With
this method, $T$ and $\rho$ of the Monte Carlo sources can be extracted. Using
this method for A Multi-Phase Transport model (AMPT) at RHIC energy, the
differences of $T$ and $\rho$ between pion and kaon are observed obviously, and
the tendencies of $T$ and $\rho$ vs collision energy $\sqrt{s_\text{NN}}$ are
similar with the results extracted directly from the AMPT model.
