Xenon-129 (¹²⁹Xe)

Data nuklida

Unsur

Xenon (Xe, Z = 54)

Nomor massa (A)

129

Proton (Z)

54

Neutron (N)

75

Massa atom

128.90478085742 ± 0.00000000542 u

Waktu paruh

Stabil

Mode peluruhan

Tidak meluruh

Kelimpahan alami

0.264 01(138)

Tahun penemuan

1920

Sumber data

IAEA Atomic Mass Data Center (NUBASE) and IUPAC CIAAW, via PubChem

Kegunaan isotop xenon

• The stable isotopes of xenon hold many clues about the formation of the elements, solar-system history, and Earth processes,. For example, 129Xe has been used as a detector of “extinct” radionuclides. Some 129Xe is radiogenic as a result of being produced by the radioactive decay of 129I (half-life of 1.7×107 years). Because the half-life of 129I is much smaller than the age of the Earth, primordial 129I (i.e. that which was present at the beginning of Earth’s history) is essentially gone after it decayed to 129Xe over geologic time. This means that radiogenic 129Xe could be a marker of the former existence of the “extinct” isotope 129I. Because primordial 129I was produced largely in supernovae, detection of radiogenic 129Xe in meteorites and terrestrial samples also implies that the time elapsed between 129I supernova nucleosynthesis and planetary condensation was short compared to the subsequent history of the Solar System. The many isotopes and reaction mechanisms of xenon have contributed numerous insights into Earth processes through the study of “xenology” (xenon isotopic variations used as geodynamic tracers to study the dynamics of the Earth).
• Xenon isotopes are used in numerous ways to investigate the movement of inhaled gases in lungs and other parts of the body. If radioactive isotopes of xenon [ 127Xe (with a half-life of 0.1 year), 133Xe, and hyperpolarized (having non-equilibrium alignment of nuclear spins, suitable for magnetic resonance) 129Xe] are inhaled, they can be tracked throughout the body by externally monitoring their decay products using magnetic resonance microscopy [high resolution magnetic resonance imaging (MRI) at microscopic (nanometer) levels] (Fig. IUPAC.54.2). This imaging technique is used to assess how well oxygen is taken up and transported by the blood.

Isotop xenon lainnya

¹⁰⁸Xe, ¹⁰⁹Xe, ¹¹⁰Xe, ¹¹¹Xe, ¹¹²Xe, ¹¹³Xe, ¹¹⁴Xe, ¹¹⁵Xe, ¹¹⁶Xe, ¹¹⁷Xe, ¹¹⁸Xe, ¹¹⁹Xe, ¹²⁰Xe, ¹²¹Xe, ¹²²Xe, ¹²³Xe, ¹²⁴Xe, ¹²⁵Xe, ¹²⁶Xe, ¹²⁷Xe, ¹²⁸Xe, ¹³⁰Xe, ¹³¹Xe, ¹³²Xe, ¹³³Xe, ¹³⁴Xe, ¹³⁵Xe, ¹³⁶Xe, ¹³⁷Xe, ¹³⁸Xe, ¹³⁹Xe, ¹⁴⁰Xe, ¹⁴¹Xe, ¹⁴²Xe, ¹⁴³Xe, ¹⁴⁴Xe, ¹⁴⁵Xe, ¹⁴⁶Xe, ¹⁴⁷Xe, ¹⁴⁸Xe, ¹⁴⁹Xe, ¹⁵⁰Xe

Pelajari

Kimia inti Simulasi peluruhan ¹²⁹Xe Bagan nuklida