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<html> <script type="text/javascript" src="/_static/js/bundle-playback.js?v=HxkREWBo" charset="utf-8"></script> <script type="text/javascript" src="/_static/js/wombat.js?v=txqj7nKC" charset="utf-8"></script> <script>window.RufflePlayer=window.RufflePlayer||{};window.RufflePlayer.config={"autoplay":"on","unmuteOverlay":"hidden"};</script> <script type="text/javascript" src="/_static/js/ruffle/ruffle.js"></script> <script type="text/javascript"> __wm.init("https://web.archive.org/web"); __wm.wombat("http://ie.lbl.gov:80/education/parent/Ba_iso.htm","20080305031548","https://web.archive.org/","web","/_static/", "1204686948"); </script> <link rel="stylesheet" type="text/css" href="/_static/css/banner-styles.css?v=S1zqJCYt" /> <link rel="stylesheet" type="text/css" href="/_static/css/iconochive.css?v=3PDvdIFv" />  <title>Ba Isotopes</title> <body bgcolor="lemonchiffon" link="red" vlink="teal" alink="darkviolet"> <table cellspacing="10"><caption><h2> Isotopes of Barium (Z=56)</h2> Click on an isotope to get more information about its decay </caption><tr><th><a href="/web/20080305031548/http://ie.lbl.gov/education/glossary/glossaryf.htm?Isotope"> Isotope</a> </th><th> <a href="/web/20080305031548/http://ie.lbl.gov/education/glossary/glossaryf.htm?HalfLife"> Half-life</a> </th><th align="left"> <a href="/web/20080305031548/http://ie.lbl.gov/education/glossary/glossaryf.htm?Spin">Spin</a> <a href="/web/20080305031548/http://ie.lbl.gov/education/glossary/glossaryf.htm?Parity"> Parity</a> </th><th align="left"> <a href="/web/20080305031548/http://ie.lbl.gov/education/glossary/glossaryf.htm?Decay"> Decay Mode(s)</a> or <a href="/web/20080305031548/http://ie.lbl.gov/education/glossary/glossaryf.htm?Abundance"> Abundance</a></th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560114"> 114Ba </a> </th><th align="left">0.43 s</th><th align="left"> 0+ </th><th align="left"> %EC+%B+ ~ 100, %A=?, %12C ~ 3E-5 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560115"> 115Ba </a> </th><th align="left"> 0.4 s</th><th align="left"> </th><th align="left"> %EC+%B+=100 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560116"> 116Ba </a> </th><th align="left"> 0.3 s</th><th align="left"> 0+ </th><th align="left"> %EC+%B+=100 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560117"> 117Ba </a> </th><th align="left">1.75 s</th><th align="left">(3/2) </th><th align="left"> %EC+%B+=100, %ECP=?, %ECA=? </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560118"> 118Ba </a> </th><th align="left"> 5.5 s</th><th align="left"> 0+ </th><th align="left"> %EC+%B+=100 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560119"> 119Ba </a> </th><th align="left">5.4 s</th><th align="left">(5/2+) </th><th align="left"> %EC+%B+=100, %ECP < 25 2 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560120"> 120Ba </a> </th><th align="left">32 s</th><th align="left">0+ </th><th align="left"> %EC+%B+=100 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560121"> 121Ba </a> </th><th align="left">29.7 s</th><th align="left">5/2(+) </th><th align="left"> %EC+%B+=100, %ECP=0.02 1 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560122"> 122Ba </a> </th><th align="left">1.95 m</th><th align="left">0+ </th><th align="left"> %EC+%B+=100 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560123"> 123Ba </a> </th><th align="left">2.7 m</th><th align="left">5/2+ </th><th align="left"> %EC+%B+=100 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560124"> 124Ba </a> </th><th align="left">11.0 m</th><th align="left">0+ </th><th align="left"> %EC+%B+=100 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560125"> 125Ba </a> </th><th align="left">3.5 m</th><th align="left">1/2(+) </th><th align="left"> %EC+%B+=100 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560126"> 126Ba </a> </th><th align="left">100 m</th><th align="left">0+ </th><th align="left"> %EC+%B+ =100 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560127"> 127Ba </a> </th><th align="left">12.7 m</th><th align="left">1/2+ </th><th align="left"> %EC+%B+=100 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560427">127m1Ba </a> </th><th align="left">1.9 s</th><th align="left"> 7/2- </th><th align="left"> %IT=100 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560128"> 128Ba </a> </th><th align="left">2.43 d</th><th align="left">0+ </th><th align="left"> %EC=100 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560129"> 129Ba </a> </th><th align="left">2.23 h</th><th align="left">1/2+ </th><th align="left"> %EC+%B+=100 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560429">129m1Ba </a> </th><th align="left">2.16 h</th><th align="left">7/2+ </th><th align="left"> %EC+%B+ < 100, %IT=? </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560130"> 130Ba </a> </th><th align="left">stable</th><th align="left"> 0+ </th><th align="left"> %Abundance=0.106 2 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560430">130m1Ba </a> </th><th align="left">11 ms</th><th align="left"> 8- </th><th align="left"> %IT=100 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560131"> 131Ba </a> </th><th align="left">11.50 d</th><th align="left">1/2+ </th><th align="left"> %EC+%B+=100 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560431">131m1Ba </a> </th><th align="left">14.6 m</th><th align="left">9/2- </th><th align="left"> %IT=100 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560132"> 132Ba </a> </th><th align="left">stable</th><th align="left"> 0+ </th><th align="left"> %Abundance=0.101 2 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560133"> 133Ba </a> </th><th align="left">10.51 y</th><th align="left">1/2+ </th><th align="left"> %EC=100 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560433">133m1Ba </a> </th><th align="left">38.9 h</th><th align="left">11/2- </th><th align="left"> %EC=0.0096 11, %IT=99.9904 11 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560134"> 134Ba </a> </th><th align="left">stable</th><th align="left">0+ </th><th align="left"> %Abundance=2.417 27 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560434">134m1Ba </a> </th><th align="left">2.63 us</th><th align="left">(10+) </th><th align="left"> </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560135"> 135Ba </a> </th><th align="left">stable</th><th align="left">3/2+ </th><th align="left"> %Abundance=6.592 18 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560435">135m1Ba </a> </th><th align="left">28.7 h</th><th align="left"> 11/2- </th><th align="left"> %IT=100 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560136"> 136Ba </a> </th><th align="left">stable</th><th align="left">0+ </th><th align="left"> %Abundance=7.854 36 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560436">136m1Ba </a> </th><th align="left">0.3084 s</th><th align="left">7- </th><th align="left"> %IT=100 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560137"> 137Ba </a> </th><th align="left">stable</th><th align="left">3/2+ </th><th align="left"> %Abundance=11.23 4 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560437">137m1Ba </a> </th><th align="left"> 2.552 m</th><th align="left">11/2- </th><th align="left"> %IT=100 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560138"> 138Ba </a> </th><th align="left">stable</th><th align="left">0+ </th><th align="left"> %Abundance=71.70 7 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560139"> 139Ba </a> </th><th align="left">83.06 m</th><th align="left">7/2- </th><th align="left"> %B-=100 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560140"> 140Ba </a> </th><th align="left">12.752 d</th><th align="left">0+ </th><th align="left"> %B-=100 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560141"> 141Ba </a> </th><th align="left">18.27 m</th><th align="left">3/2- </th><th align="left"> %B-=100 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560142"> 142Ba </a> </th><th align="left">10.6 m</th><th align="left">0+ </th><th align="left"> %B-=100 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560143"> 143Ba </a> </th><th align="left">14.33 s</th><th align="left">5/2- </th><th align="left"> %B-=100 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560144"> 144Ba </a> </th><th align="left">11.5 s</th><th align="left">0+ </th><th align="left"> %B-=100, %B-N=3.6 7 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560145"> 145Ba </a> </th><th align="left">4.31 s</th><th align="left">5/2- </th><th align="left"> %B-=100 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560146"> 146Ba </a> </th><th align="left">2.22 s</th><th align="left">0+ </th><th align="left"> %B-=100 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560147"> 147Ba </a> </th><th align="left">0.893 s</th><th align="left"> (3/2+) </th><th align="left"> %B-=100, %B-N=0.06 3 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560148"> 148Ba </a> </th><th align="left">0.607 s</th><th align="left">0+ </th><th align="left"> %B-=100, %B-N=0.4 3 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560149"> 149Ba </a> </th><th align="left"> 0.344 s</th><th align="left"> </th><th align="left"> %B-=100, %B-N=0.43 12 </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560150"> 150Ba </a> </th><th align="left">0.3 s</th><th align="left"> 0+ </th><th align="left"> %B-=100, %B-N=? </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560151"> 151Ba </a> </th><th align="left"> </th><th align="left"> </th><th align="left"> </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560152"> 152Ba </a> </th><th align="left"> </th><th align="left"> 0+ </th><th align="left"> </th></tr> <tr><th><a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/toi/nuclide.asp?iZA=560153"> 153Ba </a> </th><th align="left"> </th><th align="left"> </th><th align="left"> </th></tr> </table> <a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/ensdf/"> Isotope Explorer Nuclear Structure and Decay Data</a> <a href="https://web.archive.org/web/20080305031548/http://www.wiley.com/legacy/products/subject/physics/toi/"> 8th Edition of the Table of Isotopes</a> <a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/ip.html">Isotopes Project Home Page </a> <a href="https://web.archive.org/web/20080305031548/http://www.lbl.gov/">Lawrence Berkeley National Laboratory</a></body></html> <a href="https://web.archive.org/web/20080305031548/http://ie.lbl.gov/education/isotopes.htm"> Return to Exploring the Isotopes