態、熔區界面及溫度等各項參值隨不同之添加量及外加功率之變化。
在熔解之過程中，我們發現純鈮酸鋰從熔解初期至熔區崩潰前，
熔區均呈現穩態之熱張力對流，而摻鎂鈮酸鋰在氧化鎂添加量大於
1mol%以後，熔區開始產生非穩態之振盪性熱張力對流。
熔區表面溫度之振盪頻率隨功率、馬諾哥尼數Ma1、熔區長度及
普蘭度數之增加而下降。在同一普蘭度數下，長徑比越大臨界馬諾哥
尼數Ma2c越低熔區越易引發非穩態之振盪。熔區之幾何外型與熔區振
盪之引發有關。
普蘭度數、密度差與靜龐德數隨著氧化鎂添加量而改變熔區物理
性質，使熔區外型隨功率之變化有很大的不同，進而影響熔區之溫
度、流場及界面，而LHPG 之加熱特性，也使得熔區之加熱量隨外型
而變。

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